Peerage of Ireland

The Peerage of Ireland consists of those titles of nobility created by the English monarchs in their capacity as Lord or King of Ireland, or later by monarchs of the United Kingdom of Great Britain and Ireland. The creation of such titles came to an end in the 19th century. The ranks of the Irish peerage are Duke, Marquess, Earl, Viscount and Baron. The Crown of the United Kingdom of Great Britain & Northern Ireland continues to exercise jurisdiction over the Peerage of Ireland, including those peers whose titles derive from places located in what is now the Republic of Ireland. However Article 40.2 of the Irish Constitution forbids the state conferring titles of nobility and a citizen may not accept titles of nobility or honour except with the prior approval of the Government; there, titles of peerage are regarded in the Republic of Ireland as simply courtesy titles.

Dukes of Ireland

• The Duke of Ormonde (1661)
  • First Holder: James Butler, 1st Duke of Ormonde
  • Extinction: Dukedom extinct following death of 3rd Duke (de jure) in 1758
• The Duke of Leinster (1691)
  • First Holder: Meinhardt Schomberg, 1st Duke of Leinster
  • Note: 1st Duke of Leinster succeeded to Duke of Schomberg in 1693
  • Note: Duke of Leinster (1691) extinct following death of 1st Duke in 1719
• The Duke of Leinster (1766)
  • Other Titles: Marquesse of Kildare (1761), Earl of Kildare (1316), Earl of Offaly (1761), Viscount Leinster, of Taplow in the County of Buckingham (GB 1747) and Lord of Offaly (c. 1193–?)
  • First Holder: James Fitz Gerald,1st Duke of Leinster
• The Duke of Abercorn (1868)
  • Other Titles: Marquess of Abercorn (GB 1790), Marquess of Hamilton, of Strabane in the county of Tyrone (1868), Earl of Abercorn (Sc 1606), Viscount Strabane (Ir 1701), Viscount Hamilton (GB 1786), Lord Paisley, in the county of Renfrew (Sc 1587), Lord Abercorn, in the county of Linlithgow (Sc 1603), Lord Paisley, Hamilton, Mountcashell and Kirkpatrick (Sc 1606), Lord Hamilton of Strabane, in the county of Tyrone (Ir 1617) and Baron Mountcastle, in the county of Tyrone (Ir 1701)
  • First Holder: James Hamilton, 1st Duke of Abercorn

Marquesses of Ireland

• The Marquess of Clanricarde (1646)
  • First Holder: Ulick Burke, 1st Marquess of Clanricarde
  • Extinction: Marquessate extinct upon the death of the 1st Marquess in 1657
• The Marquess of Ormonde (1661)
  • First Holder: James Butler, 1st Marquess of Ormonde
  • Elevation: 1st Marquess of Ormonde created Dule of Ormonde (1661)
  • Extinction: Marquessate extinct upon death of 3rd Duke of Ormonde in 1758
• The Marquess of Antrim (1645)
  • First Holder: Randal MacDonnell, 1st Marquess of Antrim
  • Extinction: Marquessate extinct upon death of 1st Marquess of Antrim in 1682
• The Marquess of Waterford (1789)
  • Other Titles: Earl of Tyrone (Ir 1746), Viscount Tyrone (Ir 1720), Baron Tyrone of Haverfordwest in the County of Pembroke (GB 1786), Baron Beresford (Ir 1720), Baronet of Coleraine in the County of Londonderry (Ir 1665)
  • First Holder: George de La Poer Beresford, 1st Marquess of Waterford
• The Marquess of Kildare (1761)
  • First Holder: James Fitz Gerald, 1st Marquess of Kildare
  • Elevation: 1st Marquess of Kildate created Duke of Leinster (1766)
• The Marquess of Clanricarde (1785)
  • First Holder: Henry de Burgh, 1st Marquess of Clanricarde
  • Extinction: Marquessate extinct upon the death of the 1st Marquess in 1797
• The Marquess of Downshire (1789)
  • Other Titles: Earl of Hillsborough (Ir 1751), Viscount Hillsborough (Ir 1717), Earl of Hillsborough (GB 1772), Viscount Fairford (GB 1772), Baron Hill of Kilwarlin in County Down (Ir 1717), Baron Harwich of Harwich in the County of Essex (GB 1756), Baron Sandys of Ombersley in the County of Worcester (UK 1802)
  • First Holder: Wills Hill, 1st Marquess of Downshire
• The Marquess of Antrim (1789)
  • First Holder: Randal William MacDonnell, 1st Marquess of Antrim
  • Extinction: Marquessate extinct upon death of 1st Marquess of Antrim in 1791
• The Marquess of Donegall (1791)
  • Other Titles: Earl of Donegall (Ir 1647), Earl of Belfast (Ir 1791), Viscount Chichester of Carrickfergus in County Antrim (Ir 1625), Baron Chichester of Belfast in the County of Antrim (Ir 1625), Baron Fisherwick of Fisherwick in the County of Stafford (GB 1790), Baron Ennishowen and Carrickfergus of Ennishowen in the County of Donegal and of Carrickfergus in the County of Antrim (UK 1841)
  • First Holder: Arthur Chichester, 1st Marquess of Donegall
• The Marquess of Headfort (1800)
  • Other Titles: Earl of Bective (Ir 1766), Viscount Headfort (Ir 1762), Baron Headfort of Headfort in the County of Meath (Ir 1760), and Baron Kenlis of Kenlis in the County of Meath (UK 1831), Baronet of Kells (Ir 1704)
  • First Holder: Thomas Taylour, 1st Marquess of Headfort
• The Marquess of Sligo (1800)
  • Other Titles: Earl of Altamont in the County of Mayo (Ir 1771), Earl of Clanricarde (Ir 1800), Viscount Westport of Westport in the County of Mayo (Ir 1768), Baron Mount Eagle of Westport in the County of Mayo (Ir 1760), Baron Monteagle of Westport in the County of Mayo (UK 1806)
  • First Holder: John Denis Browne, 1st Marquess of Sligo
• The Marquess of Thomond (1800)
  • First Holder: Murrough O'Brien, 1st Marquess of Thomond
  • Extinction: Marquessate extinct upon death of 3rd Marquess of Thomond in 1855
• The Marquess of Ely (1801)
  • Other Titles: Earl of Ely (Ir 1794), Viscount Loftus of Ely (Ir 1789), Baron Loftus of Loftus Hall in the County of Wexford (Ir 1785), Baron Loftus of Long Loftus in the County of York (UK 1801), Baronets of Tottenham Green (1780)
  • First Holder: Charles Tottenham, 1st Marquess of Ely
• The Marquess Conyngham (1816)
  • Other Titles: Earl Conyngham (Ir 1797), Earl of Mount Charles (Ir 1816), Viscount Conyngham of Mount Charles in the County of Donegal (Ir 1789), Viscount Mount Charles (Ir 1789), Viscount Slane in the County of Meath (Ir 1816), Baron Conyngham of Mount Charles in the County of Donegal (Ir 1781), Baron Minster of Minster Abbey in the County of Kent (UK 1821)
  • First Holder: Henry Conyngham, 1st Marquess Conyngham
• The Marquess of Londonderry (1816)
  • Other Titles: Earl of Londonderry of the County of Londonderry (Ir 1796), Earl Vane (UK 1823), Viscount Castlereagh of Castlereagh in the County of Down (Ir 1795), Viscount Seaham of Seaham in the County Palatine of Durham (UK 1823), Baron Londonderry (Ir 1789), Baron Stewart of Stewart's Court and Ballylawn in County Donegal (UK 1814)
  • First Holder: Robert Stewart, 1st Marquess of Londonderry
• The Marquess of Ormonde (1816)
  • First Holder: Walter Butler, 1st Marquess of Ormonde
  • Extinction: Marquessate extinct upon death of 1st Marquess in 1820
• The Marquess of Westmeath (1822)
  • First Holder: George Nugent, 1st Marquess of Westmeath
  • Extinction: Marquessate extinct upon death of 1st Marquess of Westmeath in 1871
• The Marquess of Clanricarde (1825)
  • First Holder: Ulick de Burgh, 1st Marquess of Clanricarde
  • Extinction: Marquessate extinct upon death of 2nd Marquess in 1916
• The Marquess of Hamilton (1868)
  • First Holder: James Hamilton, 1st Duke of Abercorn
  • Elevation: 1st Marquess of Hamilton created Duke of Abercorn (1868)

Earls of Ireland

• The Earl of Kildare (1316)
  • First Holder: John FitzGerald, 1st Earl of Kildare
  • Elevation: 20th Earl of Kildare created Marquess of Kildare (1761)
• The Earl of Ormond (1328)
  • First Holder: James Butler, 1st Earl of Ormond
  • Dormant: Earldom dormant following death of 7th Earl in 1515, 1st Earl of Ossory succeeded
  • Elevation: 12th Earl of Ormonde created Duke of Ormonde in 1661
  • Note: Earldom continued following extinction of Dukedom in 1758
  • Elevation: 18th Earl of Ormonde created Marquess of Ormonde in 1816
  • Note: Earldom continued following extinction of Marquessate in 1820
  • Note: 19th Earl of Ormonde created Marquess of Ormonde in the Peerage of the United Kingdom in 1825
• The Earl of Waterford (1446)
  • First Holder: John Talbot, 1st Earl of Waterford
• The Earl of Ormond (1529)
  • First Holder: Thomas Boleyn, 1st Earl of Ormond (1529)
  • Extinction: Earldom extinct following death of 1st Earl in 1539
  • First Holder: Thomas Boleyn, 1st Earl of Ormond (1529)
  • Extinction: Earldom extinct following death of 1st Earl in 1539
• The Earl of Clanricarde (1543)
  • First Holder: Ulick nagCeann Burke, 1st Earl of Clanricarde
  • Elevation: 5th Earl of Clanricarde created Marquess of Clanricarde (1646)
  • Note: Earldom continued following extinction of Marquessate in 1657
  • Elevation: 12th Earl of Clanricarde created Marquess of Clanricarde (1785)
  • Note: Earldom continued following extinction of Marquessate in 1785
  • Elevation: 14th Earl of Clanricarde created Marquess of Clanricarde (1825)
  • Extinction: Earldom extinct following death of 2nd Marquess (15th Earl) in 1916
  • Note: 13th Earl of Clanricarde (1543) was created Earl of Clanricarde (1800) also in the Peerage of Ireland
• The Earl of Thomond (1543)
  • First Holder: Murrough O'Brien, 1st Earl of Thomond
  • Note: 1st Earl of Thomond was succeeded by his nephew as 2nd Earl of Thomond in 1551, despite having surviving sons
  • Forfeited: Earldom was fortfeited when a descendent of the attained 3rd Viscount Clare succeeded following the death of the 8th Earl in 1741
  • Extinction: Earldom extinct following death of 7th Viscount Clare, titular 10th Earl of Thomond in 1774
• The Earl of Cork (1620)
  • First Holder: Richard Boyle, 1st Earl of Cork
• The Earl of Antrim (1620)
  • First Holder: Randal MacDonnell, 1st Earl of Antrim
  • Elevation: 2nd Earl of Antrim created Marquess of Antrim (1645)
  • Note: Earldom continued following extinction of Marquessate in 1682
  • Note: 6th Earl of Antrim created Earl of Antrim (1785) with remainder to his daughters
  • Elevation: 6th Earl of Antrim created Marquess of Antrim (1789)
  • Extinction: Earldom extinct upon death of 1st Marquess of Antrim in 1791
• The Earl of Westmeath (1621)
  • First Holder: Richard Nugent, 1st Earl of Westmeath
  • Elevation: 8th Earl of Westmeath created Marquess of Westmeath (1822)
  • Note: Earldom continued following extinction of Marquessate in 1871
• The Earl of Meath (1627)
  • First Holder: William Brabazon, 1st Earl of Meath
• The Earl of Fingall (1628)
  • First Holder: Luke Plunkett, 1st Earl of Fingall
  • Extinction: Earl of Fingall (1628) extinct following death of the 12th Earl in 1984
• The Earl of Desmond (1628)
  • First Holder: George Feilding, 1st Earl of Desmond
  • Note: 2nd Earl of Desmond succeeded as 3rd Earl of Denbigh
• The Earl of Cavan (1647)
  • First Holder: Charles Lambart, 1st Earl of Cavan
• The Earl of Donegall (1647)
  • First Holder: Arthur Chichester, 1st Earl of Donegall
  • Elevation: 5th Earl of Donegall created Marquess of Donegall (1791)
• The Earl of Inchiquin (1654)
  • First Holder: Murrough O'Brien, 1st Earl of Inchiquin
  • Elevation: 5th Earl of Inchiquin created Marquess of Thomond (1800)
  • Extinction: Earldom extinct following death of 3rd Marquess of Thomond in 1855
• The Earl of Mountrath (1660)
  • First Holder: Charles Coote, 1st Earl of Mountrath
  • Extinction: Earldom extinct following the death of the 7th Earl of Mountrath in 1802
  • Note: 7th Earl of Mountrath created Baron Castle Coote (1800) with special remainder
• The Earl of Orrery (1660)
  • First Holder: Roger Boyle, 1st Earl of Orrery
  • Note: 5th Earl of Orrery succeeded as 5th Earl of Cork
• The Earl of Drogheda (1661)
  • First Holder: Henry Moore, 1st Earl of Drogheda
  • Elevation: 6th Earl of Drogheda created Marquess of Drogheda (1791)
  • Note: Earldom continued following extinction of Marquessate in 1801
• The Earl of Granard (1684)
  • First Holder: Arthur Forbes, 1st Earl of Granard
• The Earl of Limerick (1686)
  • First Holder: William Dongan, 1st Earl of Limerick
  • Extinction: Earl of Limerick (1686) extinct following death of 2nd Earl in 1715
• The Earl of Bellomont (1689)
  • First Holder: Richard Coote, 1st Earl of Bellomont
  • Extinction: Earl of Bellomont (1689) extinct following the death of the 3rd Earl in 1766
• The Earl of Lucan (1691)
  • First Holder: Patrick Sarsfield, 1st Earl of Lucan
  • Extinction: Earl of Lucan (1691) extinct following death of 2nd Earl in 1718
• The Earl of Athlone
  • First Holder: Godert de Ginkell, 1st Earl of Athlone
  • Extinction: Earldom extinct following death of 9th Earl in 1844
• The Earl of Galway (1697)
  • First Holder: Henri de Massue, Earl of Galway
  • Extinction: Earldom extinct following death of 1st Earl in 1720
• The Earl of Kerry (1722)
  • First Holder: Thomas FitzMaurice, 1st Earl of Kerry
• The Earl of Darnley (1725)
  • First Holder: John Bligh, 1st Earl of Darnley
• The Earl of Bessborough (1739)
  • First Holder: Brabazon Ponsonby, 1st Earl of Bessborough
• The Earl of Tyrone (1746)
  • First Holder: Marcus Beresford, 1st Earl of Tyrone
  • Elevation: 2nd Earl of Tyrone created Marquess of Waterford (1789)
• The Earl Grandison (1746)
  • First Holder: Elizabeth Mason, 1st Countess Grandison
  • Extinction: Earl Grandison (1746) extinct following death of 2nd Earl Grandison in 1800
• The Earl of Carrick (1748)
  • First Holder: Somerset Hamilton Butler, 1st Earl of Carrick
• The Earl of Hillsborough (1751)
  • First Holder: William Hill, 1st Earl of Hillsborough
  • Elevation: 1st Earl of Hillsborough created Marquess of Downshire (1789)
• The Earl of Shelburne (1753)
  • First Holder: John Petty, 1st Earl of Shelburne
  • Note: 2nd Earl of Shelburne created Marquess of Lansdowne (GB 1784)
• The Earl of Shannon (1756)
  • First Holder: Henry Boyle, 1st Earl of Shannon
• The Earl of Thomond (1756)
  • First Holder: Percy Wyndham-O'Brien, 1st Earl of Thomond
• The Earl of Belvedere (1756)
  • First Holder: Robert Rochfort, 1st Earl of Belvedere
  • Extinction: Earl of Belvedere(1756) extinct following death of 2nd Earl in 1814
  • Extinction: Earldom extinct following death of 1st Earl in 1774
• The Earl of Mornington (1760)
  • First Holder: Garret Wesley, 1st Earl of Mornington
  • Elevation: 2nd Earl of Mornington created Marquess Wellesley (1799)
  • Note: Earldom continued following extinction of Marquessate in 1842
  • Note: 2nd Duke of Wellington (GB 1814) succeeded as 6th Earl of Mornington
• The Earl of Offaly (1761)
  • First Holder: James FitzGerald, 1st Marquess of Kildare
  • Elevation: 1st Marquess of Kildare created Marquess of Kildare (1761)
• The Earl of Arran (1762)
  • First Holder</strong: Arthur Gore 1st Viscount Sudley later 1st Earl of Arran
• The Earl of Courtown (1762)
  • First Holder: James Stopford, 1st Earl of Courtown
• The Earl of Charlemont (1763)
  • First Holder: James Caulfeild, 1st Earl of Charlemont
  • Extinction: Earl of Charlemont (1763) extinct following death of 3rd Earl in 1892
• The Earl of Farnham (1763)
  • First Holder: Robert Maxwell, 1st Earl of Farnham
  • Extinction: Earldom extinct following death of 1st Earl of Farnham in 1779
• The Earl of Mexborough (1766)
  • First Holder: John Savile, 1st Earl of Mexborough
• The Earl Winterton (1766)
  • First Holder: Edward Garth-Turnour, 1st Earl Winterton
• The Earl of Bective (1766)
  • First Holder:Thomas Taylour, 1st Earl of Bective
  • Elevation: 2nd Earl of Bective created Marquess of Headfort (1766)
• The Earl of Ely (1766)
  • First Holder: Nicholas Hume-Loftus, 1st Earl of Ely
  • Extinction: Earldom extinct following death of 1st Earl of Ely (1766)
• The Earl of Bellomont (1767)
  • First Holder: Charles Coote, 1st Earl of Bellomont
  • Extinction: Earl of Bellomont (1767) extinct following death of 1st Earl in 1800
• The Earl of Kingston (1768)
  • First Holder: Edward King, 1st Earl of Kingston
• The Earl of Roden (1771)
  • First Holder: Robert Jocelyn, 1st Earl of Roden
• The Earl of Altamont (1771)
  • First Holder: John Browne, 1st Earl of Altamont
  • Elevation: 3rd Earl of Altamont created Marquess of Sligo (1800)
• The Earl of Ely (1771)
  • First Holder: Henry Loftus, 1st Earl of Ely
  • Extinction: Earldom extinct following death of 1st Earl of Ely (1771)
• The Earl of Lisburne (1776)
  • First Holder: Wilmot Vaughan, 1st Earl of Lisburne
• The Earl of Clanwilliam (1776)
  • First Holder: John Meade, 1st Earl of Clanwilliam
• The Earl of Aldborough (1777)
  • First Holder: John Stratford, 1st Earl of Aldborough
  • Extinction: Earldom extinct following the death of the 6th Earl of Aldorough in 1875
• The Earl of Clermont (1777)
  • First Holder: William Henry Fortescue, 1st Earl of Clermont
  • Extinction: Viscountcy extinct following the death of the 1st Earl of Clermont in 1806
• The Earl Conyngham (1781)
  • First Holder: Henry Conyngham, 1st Earl Conyngham
  • Extinction: Earldom extinct upon death of 1st Earl Conyngham in 1781
• Earl of Farnham (1785)
  • First Holder: Barry Maxwell, 1st Earl of Farnham
  • Extinction: Earldom extinct following death of 2nd Earl of Farnham in 1823
• The Earl of Antrim (1785)
  • First Holder: Randal William MacDonnell, 1st Earl of Antrim
  • Elevation: 1st Earl of Antrim created Marquess of Antrim (1789)
  • Note: Earldom continued following extinction of Marquessate in 1791
• The Earl of Longford (1785)
  • First Holder: Elizabeth Pakenham, 1st Countess of Longford
• The Earl of Portarlington (1785)
  • First Holder: John Dawson, 1st Earl of Portarlington
• The Earl of Mayo (1785)
  • First Holder John Bourke, 1st Earl of Mayo
• The Earl Annesley (1789)
  • Francis Charles Annesley 2nd Viscount Glerawly later 1st Earl Annesley
• The Earl of Enniskillen (1789)
  • First Holder: William Willoughby Cole, 1st Earl of Enniskillen
• The Earl Erne (1789)
  • First Holder: John Creighton, 1st Earl Erne
• The Earl of Befast (1791)
  • First Holder: Arthur Chichester, 1st Marquess of Donegall
  • Elevation: 1st Marquess of Donegall created Marquess of Donegall (1791)
• The Earl of Kilkenny (1793)
  • First Holder: Edmund Butler, 1st Earl of Kilkenny
  • Extinction: Earl of Kilkenny (1793) extinct following death of 1st Earl in 1846
• The Earl of Desart (1793)
  • First Holder: Otway Cuffe, 1st Earl of Desart
  • Extinction: Earldom extinct following the death of the 5th Earl of Desart in 1934
• The Earl of Ely (1794)
  • First Holder: Charles Loftus, 1st Earl of Ely
  • Elevation: 1st Eal of Loftus created Marquess of Ely (1800)
• The Earl of Lucan (1795)
  • First Holder: Charles Bingham, 1st Earl of Lucan
• The Earl of Leitrim (1795)
  • First Holder: Robert Clements, 1st Earl of Leitrim
  • Extinction: Earldom extinct following the death of the 5th Earl of Leitrim in 1952
• The Earl of Londonderry (1796)
  • First Holder: Robert Stewart, 1st Marquess of Londonderry
  • Elevation: 1st Marquess of Londonderry created Marquess of Londonderry (1816)
• The Earl Belmore (1797)
  • First Holder: Armar Lowry 1st Baron Belmore later 1st Viscount Belmore later 1st Earl Belmore
• The Earl Conyngham (1797)
  • First Holder: Henry Conyngham, 1st Marquess Conyngham
  • Elevation: 1st Marquess Conyngham created Marquess of Conyngham (1816)
  • Note: 1st Earl Conyngham subsequently created Earl of Mount Charles (1816)
• The Earl Castle Stewart (1800)
  • First Holder: Andrew Thomas Stuart, 1st Earl Castle Stewart
• The Earl of Donoughmore (1800)
  • First Holder: Richard Hely-Hutchinson, 1st Earl of Donoughmore
• The Earl of Clanricarde (1800)
  • First Holder: John Thomas de Burgh, 1st Earl of Clanricarde
  • Elevation: 2nd Earl of Clanricarde created Marquess of Clanricarde (1825)
  • Note: Earldom continued following extinction of Marquessate in 1916
• The Earl of Caledon (1800)
  • First Holder: James Alexander, 1st Earl of Caledon
• The Earl of Clanricarde (1800)
  • First Holder: George Ulick Browne, 6th Marquess of Sligo - succeeded to the title of Earl of Clanricarde (1800)
• The Earl of Kenmare (1801)
  • First Holder: Valentine Browne, 1st Earl of Kenmare
  • Extinction: Earldom extinct following the death of the 7th Earl of Kenmare in 1952
• The Earl of Limerick (1803)
  • First Holder: Edmund Henry Pery, 1st Earl of Limerick
• The Earl of Clancarty (1803)
  • First Holder: William Power Keating Trench, 1st Earl of Clancarty
• The Earl of Gosford (1806)
  • First Holder: Arthur Acheson, 1st Earl of Gosford
• The Earl of Rosse (1806)
  • First Holder: Laurence Harman Parsons, 1st Earl of Rosse
• The Earl of Normanton (1806)
  • First Holder: Charles Agar, 1st Earl of Normanton
• The Earl of Mount Charles (1816)
  • First Holder: Henry Conyngham, 1st Marquess Conyngham
  • Elevation: 1st Marquess Conyngham created Marquess Conyngham (1816)
• The Earl of Sheffield (1816)
  • First Holder: John Baker-Holroyd, 1st Earl of Sheffield
  • Extinction: Earldom extinct following death of 3rd Earl in 1909
• The Earl of Kilmorey (1822)
  • First Holder: Francis Needham, 1st Earl of Kilmorey
• The Earl of Listowel (1822)
  • First Holder: William Hare, 1st Earl of Listowel
• The Earl of Rathdowne (1822)
  • First Holder: Henry Stanley Monck, 1st Earl of Rathdowne
  • Extinction: Earldom extinct following death of 1st Earl in 1848
• The Earl of Norbury (1827)
  • First Holder: John Toler, 1st Earl of Norbury
• The Earl of Ranfurly (1831)
  • First Holder: Thomas Knox, 1st Earl of Ranfurly

Viscounts of Ireland

• The Viscount Gormanston (1478)
  • First Holder: Robert Preston, 1st Viscount Gormanston
• The Viscount Kilmaude (1537)
  • First Holder: Edmond Fitzmaurice, 1st Viscount Kilmaule
  • Extinction: Viscountcy extinct following death of 1st Viscount Kilmaule in 1541
• The Viscount Mountgarret (1550)
  • First Holder: Richard Butler, 1st Viscount Mountgarret
  • Elevation: 12th Viscount Mountgarret created Earl of Kilkenny (1793)
  • Note: Viscountcy continued following extinction of Earldom in 1846
• The Viscount Dunluce (1618)
  • First Holder: Randal MacDonnell, 1st Viscount Kilmaule
  • Elevation: 1st Viscount Kilmaule created Earl of Antrim (1620)
  • Note: 6th Earl of Antrim created Viscount Kilmaule (1785) with remainder to his daughters
  • Extinction: Viscountcy extinct upon death of 1st Marquess of Antrim in 1791
• The Viscount Powerscourt (1618)
  • First Holder: Richard Wingfield, 1st Viscount Powerscourt
  • Extinction: Viscountcy extinct following death of 1st Viscount in 1634
• The Viscount Grandison (1620)
  • First Holder: Oliver St John, 1st Viscount Grandison
  • Elevation: 5th Viscount Grandison created Earl Grandison (1721)
  • Note: Viscountcy continued following extinction of Earldon in 1721, when 3rd Earl of Jersey succeeded
• The Viscount of Dungarvan (1620)
  • First Holder: Richard Boyle, 1st Viscount of Dungarvan
  • Elevation: 1st Viscount of Dungarvan created Earl of Cork (1620)
• The Viscount Moore (1621)
  • First Holder: Garret Moore, 1st Viscount Moore
  • Elevation: 3rd Viscount Moore created Earl of Drogheda (1661)
• The Viscount Callan (1622)
  • First Holder: George Feilding, 1st Viscount Callan
  • Elevation: 1st Viscount Callan created Earl of Desmond (1628)
• The Viscount Valentia (1622)
  • First Holder: Francis Annesley, 1st Viscount Valentia
  • Note: 2nd Viscount Valentia created Earl of Anglesey (1661)
  • Note: Viscountcy continued following extinction of Earldom in 1761
  • Note: 8th Viscount Valentia created Earl of Mountnorris (1793)
  • Note: Viscountcy continued following extinction of Earldom in 1844
• The Viscount Dillon (1622)
  • First Holder: Theobald Dillon, 1st Viscount Dillon
• The Viscount Chichester (1625)
  • First Holder: Edward Chichester, 1st Viscount Chichester
  • Elevation: 2nd Viscount Chichester created Earl of Donegall (1647)
• Viscount Netterville (1622)
  • First Holder: Nicholas Netterville, 1st Viscount Netterville
  • Extinction: Viscountcy extinct following the death of the 8th Viscount in 1882
• The Viscount Kilmorey (1625)
  • First Holder: Robert Needham, 1st Viscount Kilmorey
  • Elevation: 12th Viscount Kilmorey created Earl of Kilmorey (1822)
• The Viscount Killultagh (1627)
  • First Holder: Edward Conway, 1st Viscount Killultagh
  • Note: 3rd Viscount created Earl of Conway (1679) in the Peerage of England
  • Extinction: Viscountcy extinct following the death of the 1st Earl of Conway in 1683
• The Viscount Lumley (1628)
  • First Holder: Richard Lumley, 1st Viscount Lumley
  • Note: 2nd Viscount Lumley created Earl of Scarborough in the Peerage of England (1690)
• The Viscount Muskerry (1628)
  • First Holder: Charles MacCarty, 1st Viscount Muskerry
  • Elevation: 2nd Viscount Muskerry created Earl of Clancarty (1658)
  • Forfeited: 4th Earl of Clancarty was attainted in 1691, with his titles forfeited
• The Viscount Bourke (1629)
  • First Holder: John Bourke, 1st Viscount Bourke
  • Note: 5th Earl of Clanricarde succeeded as 3rd Viscount
• The Viscount Ikerrin (1629)
  • First Holder: Pierce Butler, 1st Viscount Ikerrin
  • Elevation: 8th Viscount Ikerrin created Earl of Carrick (1748)
• The Viscount Kilcoursie (1647)
  • First Holder: Charles Lambart, 1st Viscount Kilcoursie
  • Elevation: 1st Viscount Kilcoursie created 1st Earl of Cavan (1647)
• The Viscount Tara (1650)
  • First Holder: Thomas Preston, 1st Viscount Tara
  • Extinction: Viscountcy extinct following death of 3rd Viscount in 1674
• The Viscount Coote (1660)
  • First Holder: Charles Coote, 1st Viscount Coote
  • Elevation: 1st Viscount Coote created Earl of Mountrath (1660)
  • Extinction: Viscountcy extinct following the death of the 7th Earl of Mountrath in 1802
  • Note: 7th Earl of Mountrath created Baron Castle Coote (1800) with special remainder
• The Viscount Massereene (1660)
  • First Holder: John Clotworthy, 1st Viscount Massereene
  • Note: 5th Viscount Massereene created Earl of Massereene (1756)
  • Note: Viscountcy continued following extinction of Earldom in 1816
  • Note: 3rd Viscount Ferrard succeeded Viscountcy in 1831
• The Viscount Cholmondeley (1661)
  • First Holder: Robert Cholmondeley, 1st Viscount Cholmondeley
  • Note: 2nd Viscount Cholmondeley created Earl of Cholmondeley in the Peerage of England (1706)
  • Note: 4th Earl of Cholmondeley created Marquess of Cholmondeley in the Peerage of United Kingdom (1815)
• The Viscount Charlemont (1665)
  • First Holder: William Caulfeild, 1st Viscount Charlemont
  • Note: 4th Viscount Charlemont created Earl of Charlemont (1763)
  • Note: Viscountcy continued following extinction of Earldom in 1892
• The Viscount Granard (1675)
  • First Holder: Arthur Forbes, 1st Viscount Granard
  • Elevation: 1st Viscount Granard created Earl of Granard (1684)
• The Viscount Downe (1680)
  • First Holder: John Dawnay, 1st Viscount Downe
• The Viscount Rosse (1681)
  • First Holder: Richard Parsons, 1st Viscount Rosse
  • Elevation: 2nd Viscount Rosse created Earl of Rosse (1718)
• The Viscount Dungan (1686)
  • First Holder: William Dongan, 1st Viscount Dungan
  • Elevation: 1st Viscount Dungan created Earl of Limerick (1686)
  • Extinction: Viscount Dungan (1686) extinct following death of 2nd Earl of Limerick in 1715
• The Viscount Galway (1687)
  • First Holder: Ulick Bourke, 1st Viscount Galway
  • Extinction: Viscountcy extinct following death of 1st Viscount Galway in 1691
• The Viscount Kenmare (1689)
  • First Holder: Sir Valentine Browne, 1st Viscount Kenmare
  • Note: The Third Baronet Browne was created First Viscount Kenmare (Ireland) on 20 May 1689, by King James II, after his deposition by the English Parliament, but while he still possessed his rights as King of Ireland. At the time James was presiding over the short-lived Patriot Parliament. The peerage remained on the Irish patent roll in a constitutionally ambiguous position, but was not recognized by the Protestant political establishment.
• The Viscount Galway (1692)
  • First Holder: Henri de Massue, Viscount Galway
  • Elevation: 1st Viscount Galway created Earl of Galway (1697)
  • Extinction: Viscountcy extinct following death of 1st Earl of Galway in 1720
• The Viscount Lisburne (1695)
  • First Holder: John Vaughan, 1st Viscount Lisburne
  • Elevation: 4th Viscount Lisburne created Earl of Lisburne (1776)
• The Viscount Doneraile (1703)
  • First Holder: Arthur St Leger, 1st Viscount Doneraile
  • Note: Viscount Doneraile (1703) extinct following death of 4th Viscount in 1767
• The Viscount Molesworth (1716)
  • First Holder: Robert Molesworth, 1st Viscount Molesworth
• The Viscount Chetwynd (1717)
  • First Holder: Walter Chetwynd, 1st Viscount Chetwynd
• The Viscount Midleton (1717)
  • First Holder: Alan Brodrick, 1st Viscount Midleton
  • Note: 9th Viscount Midleton created Earl of Midleton in the Peerage of the United Kingdom (1920)
  • Note: Viscountcy continued following extinction of Earldom in 1979
• The Viscount Boyne (1717)
  • First Holder: Gustavus Hamilton, 1st Viscount Boyne
• John Brownlow, 1st Viscount Tyrconnel
  • First Holder: John Brownlow, 1st Viscount Tyrconnel
  • extinction: Viscountcy extinct following death of 1st Viscount in 1754
• The Viscount Grimston (1719)
  • First Holder: William Grimston, 1st Viscount Grimston
  • Note: 4th Viscount Grimston created Earl of Versulam in the Peerage of the United Kingdom (1815)
• The Viscount Tyrone (1720)
  • First Holder: Marcus Beresford, 1st Viscount Tyrone
  • Elevation: 1st Viscount Tyrone created Earl of Tyrone (1746)
• The Viscount Gage (1720)
  • First Holder: Thomas Gage, 1st Viscount Gage
• The Viscount Darnley (1723)
  • First Holder: John Bligh, 1st Viscount Darnley
  • Elevation: 1st Viscount Darnley created Earl of Darnley (1725)
• The Viscount Duncannon (1723)
  • First Holder: William Ponsonby, 1st Viscount Duncannon
  • Elevation: 2nd Viscount Duncannon created Earl of Bessborough (1739)
• The Viscount Bateman (1725)
  • First Holder: William Bateman, 1st Viscount Bateman
  • Extinction: Viscountcy extinct following death of 2nd Viscount in 1802
• The Viscount Galway (1727)
  • First Holder: John Monckton, 1st Viscount Galway
• The Viscount Kilmaule (1537)
  • First Holder: Edmond Fitzmaurice, 1st Viscount Kilmaule
  • Extinction: Viscountcy extinct following death of 1st Viscount in 1541
• The Viscount Powerscourt (1744)
  • First Holder: Richard Wingfield, 1st Viscount Powerscourt
• The Viscount Ashbrook (1751)
  • First Holder: Henry Flower, 1st Viscount Ashbrook
• The Viscount Kilwarlin (1751)
  • First Holder: Wills Hill, 1st Viscount Kilwarlin
  • Elevation: 1st Viscount Kilwarlin created Earl of Hillborough (1751) and Marquess of Downshire (1789)
  • Note: 1st Viscount Kilwarlin had previous succeeded his father as 2nd Viscount Hillsborough (1717) in 1742
• The Viscount FitzMaurice (1751)
  • First Holder: John Petty, 1st Viscount FitzMaurice
  • Elevation: 1st Viscount FitzMaurice created Earl of Shelburne (1753)
• The Viscount Jocelyn (1755)
  • First Holder: Robert Jocelyn, 1st Viscount Jocelyn
  • Elevation: 2nd Viscount Jocelyn created Earl of Roden (1771)
• The Viscount Belfield (1751)
  • First Holder: Robert Rochfort, 1st Viscount Belfield
  • Elevation: 1st Viscount Belfield created Earl of Belvedere (1756)
  • Extinction: Viscount Belfield (1751) extinct following death of 2nd Earl in 1814
• The Viscount Conyngham (1756)
  • First Holder: Henry Conyngham, 1st Viscount Conyngham
  • Elevation: 1st Viscount Conyngham created Earl Conyngham (1781)
  • Extinction: Viscountcy extinct upon death of 1st Earl Conyngham in 1781
• The Viscount Boyle (1756)
  • First Holder: Henry Boyle, 1st Viscount Boyle
  • Elevation: 1st Viscount Boyle created Earl of Shannon (1756)
• The Viscount Sudley (1760)
  • First Holder: Arthur Gore, 1st Viscount Sudley
  • Elevation: 1st Viscount Sudley created Earl of Arran (1762)
• The Viscount Loftus (1756)
  • First Holder: Nicholas Loftus, 1st Viscount Loftus
  • Elevation: 2nd Viscount Loftus created Earl of Ely (1766)
  • Note: Viscountcy continued following death of 2nd Earl of Ely in 1769
  • Elevation: 4th Viscount Loftus created Earl of Ely (1771)
  • Extinction: Viscount Loftus (1756) extinct following the death of 1st Earl of Ely in 1783
• The Viscount Wellesley (1760)
  • First Holder: Garret Wesley, 1st Viscount Wellesley
  • Elevation: 1st Viscount Wellesley created Earl of Mornington (1760)
• The Viscount Farnham (1760)
  • First Holder: Robert Maxwell, 1st Viscount Farnham
  • Elevation: 1st Viscount Farnham created Earl of Farnham (1763)
  • Extinction: Viscountcy extinct following death of 1st Earl of Farnham in 1779
• The Viscount Headfort (1762)
  • First Holder: Thomas Taylour, 1st Viscount Headfort
  • Elevation: 1st Viscount Headfort created Earl of Bective (1766)
• The Viscount Stopford (1762)
  • First Holder: James Stopford, 1st Viscount Stopford
  • Elevation: 1st Viscount Stopford created Earl of Courtown (1762)
• The Viscount Turnour (1766)
  • First Holder: Edward Garth-Turnour, 1st Viscount Turnour
  • Elevation: 1t Viscount Turnour created Earl Winterton (1766)
• The Viscount Kingston (1766)
  • First Holder: Edward King, 1st Earl of Kingston
  • Elevation: 1st Viscount Kingston created Earl of Kingston (1768)
• The Viscount Pollington (1766)
  • First Holder: John Savile, 1st Viscount Pollington
  • Elevation: 1st Viscount Pollington created Earl of Mexborough (1766)
• Viscount Clanwilliam (1766)
  • First Holder: John Meade, 1st Viscount Clanwilliam
  • Elevation: 1st Viscount Clanwilliam created Earl of Clanwilliam (1776)
• The Viscount Glerawly (1766)
  • First Holder: William Annesley, 1st Viscount Glerawly
  • Elevation: 2nd Viscount Glerawly created Earl Annesley (1789)
• The Viscount Westport (1768)
  • First Holder: John Browne, 1st Viscount Westport
  • Elevation: 1st Viscount Westport created Earl of Altamont (1771)
• The Viscount Carlow (1776)
  • First Holder: William Henry Dawson, 1st Viscount Carlow
  • Elevation: 2nd Viscount Carlow created Earl of Portarlington (1785)
• The Viscount Southwell (1776)
  • First Holder: Thomas George Southwell, 1st Viscount Southwell
• The Viscount de Vesci (1776)
  • First Holder: Thomas Vesey, 1st Viscount de Vesci
• The Viscount Lifford (1781)
  • First Holder: James Hewitt, 1st Viscount Lifford
• The Viscount Enniskillen (1776)
  • First Holder: William Willoughby Cole, 1st Viscount Enniskillen
  • Elevation: 1st Viscount Enniskillen created Earl of Enniskillen (1789)
• The Viscount Aldborough (1776)
  • First Holder: John Stratford, 1st Viscount Aldborough
  • Elevation: 1st Viscount Aldborough created Viscount Amiens (1777) and Earl of Aldborough (1777)
  • Extinction: Viscountcy extinct following the death of the 6th Earl of Aldorough in 1875
• The Viscount Clermont (1776)
  • First Holder: William Henry Fortescue, 1st Viscount Clermont
  • Elevation: 1st Viscount Clermont created Earl of Clermont (1777)
  • Extinction: Viscountcy extinct following the death of the 2nd Viscount Clermont in 1829
• The Viscount Amiens (1777)
  • First Holder: John Stratford, 1st Viscount Amiens
  • Elevation: 1st Viscount Amiens created Earl of Aldborough (1777)
  • Extinction: Viscountcy extinct following the death of the 6th Earl of Aldorough in 1875
• The Viscount Bangor (1781)
  • First Holder: Bernard Ward, 1st Viscount Bangor
• The Viscount Mayo (1781)
  • First Holder: John Bourke, 1st Viscount Mayo
  • Elevation: 1st Viscount Mayo created Earl of Mayo (1785)
• The Viscount Erne (1781)
  • First Holder: Creighton, 1st Viscount Erne
  • Elevation: 1st Viscount Erne created Earl Erne (1789)
• Viscount Farnham (1781)
  • First Holder: Barry Maxwell, 1st Viscount Farnham
  • Elevation: 1st Viscount Farnham created Earl of Farnham (1785)
  • Extinction: Viscountcy extinct following death of 2nd Earl of Farnham in 1823
• The Viscount Desart (1781)
  • First Holder: Otway Cuffe, 1st Viscount Desart
  • Elevation: 1st Viscount created Earl of Desart (1793)
  • Extinction: Viscountcy extinct following the death of the 5th Earl of Desart in 1934
• The Viscount Doneraile (1785)
  • First Holder: St Leger St Leger, 1st Viscount Doneraile
• The Viscount Dunluce (1785)
  • First Holder: Randal William MacDonnell, 1st Viscount Dunlace
  • Elevation: 1st Viscount Dunlace created Earl of Antrim (1789)
• The Viscount Gosford (1785)
  • First Holder: Archibald Acheson, 1st Viscount Gosford
  • Elevation: 2nd Viscount Gosford created Earl of Gosford (1806)
• The Viscount Belmore (1789)
  • First Holder: Armar Lowry-Corry, 1st Viscount Belmore
  • Elevation: 1st Viscount Belmore created Earl Belmore (1797)
• The Viscount Loftus (1789)
  • First Holder: Charles Loftus, 1st Viscount Loftus
  • Elevation: 1st Viscount Loftus created Earl of Ely (1794) and Marquess of Ely (1800)
• Viscount Conyngham (1789)
  • First Holder: Henry Burton Conyngham, 1st Viscount Conyngham
  • Elevation: 1st Viscount Conyngham created Earl Conyngham (1797) and Marquess Conyngham (1816)
• The Viscount Harberton (1791)
  • First Holder: Arthur Pomeroy, 1st Viscount Harberton
• The Viscount Northland (1791)
  • First Holder: Thomas Knox, 1st Viscount Northland
  • Elevation: 2nd Viscount Northland created Earl of Ranfurly (1831)
• The Viscount Hawarden (1793)
  • First Holder: Cornwallis Maude, 1st Viscount Hawarden
  • Note: 4th Viscount Hawarden created Earl de Montalt in the Peerage of the United Kingdom (1886)
  • Note: Viscountcy continued following extinction of Earldom in 1905
• The Viscount Leitrim (1793)
  • First Holder: Robert Clements, 1st Viscount Leitrim
  • Elevation: 1st Viscount Leitrim created Earl of Leitrim (1795)
  • Extinction: Viscountcy extinct following the death of the 5th Earl of Leitrim in 1952
• The Viscount Castle Stewart (1793)
  • First Holder: Andrew Thomas Stuart, 1st Viscount Castle Stewart
  • Elevation: 1st Viscount Castle Stewart created Earl Castle Stewart (1800)
• The Viscount Castlereagh (1795)
  • First Holder: Robert Stewart, 1st Viscount Castlereagh
  • Elevation: 1st Viscount Castlereagh created Earl of Londonderry (1796)
• The Viscount Oxmantown (1795)
  • First Holder: Laurence Parsons, 1st Viscount Oxmantown
  • Elevation: 1st Viscount OxmanTown created Earl of Rosse (1806)
  • Extinction: Viscount Oxmantown (1795) extinct following death of 1st Earl of Rosse in 1807, though Earldom continued
• The Viscount Ferrard (1797)
  • First Holder: Margaretta Amelia Foster, 1st Viscountess Ferrard
  • Note: 3rd Viscount Ferrard succeeded to Viscount Massereene in 1831
• Viscount Mount Charles (1797)
  • First Holder: Henry Conyngham, 1st Viscount Mount Charles
  • Elevation: 1st Viscount Mount Charles created Earl Conyngham (1797)
  • Note: 1st Viscount Mount Charles previously created Viscount Conyngham (1789) and subsequently Viscount Slane (1816)
• The Viscount Donoughmore (1797)
  • First Holder: Richard Hely-Hutchinson, 1st Viscount Donoughmore
  • Elevation: 1st Viscount Donoughmore created Earl of Donoughmore (1800)
• The Viscount Caledon (1797)
  • First Holder: James Alexander, 1st Viscount Caledon
  • Elevation: 1st Viscount Caledon created Earl of Caledon (1800)
• The Viscount Kenmare (1798)
  • First Holder: Valentine Browne, 1st Viscount Kenmare
  • Elevation: 1st Viscount created Earl of Kenmare (1801)
  • Extinction: Viscountcy extinct following the death of the 7th Earl of Kenmare in 1952
• The Viscount Limerick (1800)
  • First Holder: Edmund Pery, 1st Viscount Limerick
  • Elevation: 1st Viscount Limerick created Earl of Limerick (1803)
• The Viscount Somerton (1800)
  • First Holder: Charles Agar, 1st Viscount Somerton
  • Elevation: 1st Viscount Somerton created Earl of Normanton (1806)
• The Viscount Dunlo (1801)
  • First Holder: William Trench, 1st Viscount Dunlo
  • Elevation: 1st Viscount Dunlo created Earl of Clancarty (1803)
• The Viscount Slane (1816)
  • First Holder: Henry Conyngham, 1st Viscount Slane
  • Elevation: 1st Viscount Slane created Earl Conynghamof Mount Charles (1816)
  • Note: 1st Viscount Slane previously created Viscount Conyngham (1789) and Viscount Mount Charles (1797)
• The Viscount Monck (January 1801)
  • First Holder: Charles Stanley Monck, 1st Viscount Monck
  • Note: 2nd Viscount Monck created Earl of Rathdowne (1822)
  • Note: Viscountcy continued following extinction of Earldom in 1848
• The Viscount Newcomen (1803)
  • First Holder: Charlotte Gleadowe-Newcomen, 1st Viscountess Newcomen
  • Extinction: Viscountcy extinct following the death of the 2nd Viscount Newcomen in 1825
• The Viscount Longueville (1811)
  • First Holder: Richard Longfield, 1st Viscount Longueville
  • Extinction: Viscountcy extinct following the death of the 1st Viscount in 1811
• The Viscount Gort (1816)
  • First Holder: John Prendergast-Smyth, 1st Viscount Gort
• The Viscount Ennismore and Listowel (1816)
  • First Holder: William Hare, 1st Viscount Ennismore and Listowel
  • Elevation: 1st Viscount Ennismore and Listowel created Earl of Listowel (1822)
• The Viscount Pevensey (1816)
  • First Holder: John Baker-Holroyd, 1st Viscount Pevensey
  • Elevation: 1st Viscount Pevensey created Earl of Sheffield (1816)
  • Extinction: Viscountcy extinct following death of 3rd Earl in 1909
• The Viscount Newry and Mourne (1822)
  • First Holder: Francis Needham, 1st Viscount Newry and Mourne
  • Elevation: 1st Viscount Newry and Mourne created Earl of Kilmorey (1822)
• The Viscount Glandine (1827)
  • First Holder: John Toler, 1st Viscount Glandine
  • Elevation: 1st Viscount Glandine created Earl of Norbury (1827)

Barons of Ireland

• The Baron Kerry (1223)
  • First Holder: Thomas Fitzmaurice, 1st Baron Kerry
  • Elevation: 11th Baron Kerry created Viscount Kilmaule (1537)
  • Note: Baron Kerry (1223) continued following extinction of Viscountcy in 1541
  • Elevation: 21st Baron Kerry created Earl of Kerry (1723)
• The Baron Dunboyne (1324)
  • First Holder: Thomas Butler, 1st Baron Dunboyne
  • Note: 11th Baron Dunboyne created Baron Dunboyne (1541)
• The Baron Gormanston (1365-1370)
  • First Holder: Robert Preston, 1st Baron Gormanston
  • Elevation: 4th Baron Gormanston created Viscount Gormanston (1478)
• The Baron Delvin (c 1389/1486)
  • First Holder: William Fitzrichard Nugent, 1st Baron Delvin
  • Elevation: 7th Baron Delvin created Earl of Westmeath in 1621
• The Baron Kingsale (1340?)
• The Baron Killeen (c1426)
  • Elevation: 10th Baron Killeen created Earl of Fingall in 1628
  • Extinction: Baron Killeen (c1426) extinct following the death of the 12th Earl of Fingall
• The Baron of Dunsany (1439?)
  • First Holder: Christopher Plunkett, 1st Baron of Dunsany
• The Baron Trimlestown (1462)
  • First Holder: Robert Barnewall, 1st Baron Trimlestown
• The Baron Dunboyne (1541)
  • First Holder: Edmond Butler, 1st/11th Baron Dunboyne
• The Baron Louth (1541)
  • First Holder: Oliver Plunkett, 1st Baron Louth
• The Baron Inchiquin (1543)
  • First Holder: Murrough O'Brien, 1st Baron Inchiquin
  • Note: 1st Baron Inchiquin created Earl of Thomond (1543) with remainder to his nephew
  • Elevation: 6th Baron Inchiquin created Earl of Inchiquin (1654)
  • Note: Baron Inchiquin (1543) continued following extinction of Earldom in 1855
• The Baron Ibrickane (1543)
  • First Holder: Donough O'Brien 1st Baron Ibracken
  • Note: 1st Baron Ibrickane succeeded as 2nd Earl of Thomond in 1551
  • Forfeited: Baron Ibrickane (1543) was fortfeited when a descendent of the attained 3rd Viscount Clare succeeded following the death of the 8th Earl in 1741
  • Extinction: Baron Ibrickane (1543) extinct following death of 7th Viscount Clare, titular 10th Earl of Thomond in 1774
• The Baron Dunkillin (1543)
  • First Holder: Ulick nagCeann Burke, 1st Baron Dunkillin
  • Elevation: 1st Baron Dunkillin created Earl of Clanricarde (1543)
• The Baron Chichester (1613)
  • First Holder: Arthur Chichester, 1st Baron Chichester
  • Extinction: Baron Chichester (1613) extinct following death of 1st Baron Chichester in 1625
• The Baron Boyle (1616)
  • First Holder: Richard Boyle, 1st Baron Boyle
  • Elevation: 1st Baron Boyle created Earl of Cork (1620)
• The Baron Ardee (1616)
  • First Holder: Edward Brabazon, 1st Baron Ardee
  • Elevation: 2nd Baron Ardee created Earl of Meath (1627)
• The Baron Moore (1616)
  • First Holder: Garret Moore, 1st Baron Moore
  • Elevation: 1st Baron Moore created Viscount Moore (1621)
• The Baron Lambart (1618)
  • First Holder: Oliver Lambart, 1st Baron Lambart
  • Elevation: 2nd Baron Lambart created Viscount Kilcoursie (1647) and Earl of Cavan (1647)
• The Baron Castle Stewart (1619)
  • First Holder: Andrew Stuart, 1st Baron Castle Stuart
  • Elevation: 9th Baron Catlew Stewart created Viscount Castle Stuart (1793) and Earl Castle Stewart (1800)
• The Baron Caufield of Charlemont (1620)
  • First Holder: Toby Caulfeild, 1st Baron Caulfeild
  • Elevation: 5th Baron Caufeild created Viscount Charlemont (1665)
• The Baron Digby (1620)
  • First Holder: Robert Digby, 1st Baron Digby
  • Elevation: 7th Baron Digby created Earl Digby (1790)
  • Note: Baron Digby (1620) continued following extinction of Earldom in 1856
• The Baron Feilding (1620)
  • First Holder: 1st Baron Feilding
  • Elevation: 1st Baron Feilding created Viscount Feilding (1620) and Earl of Denbigh (1622)
• The Baron Blayney (1621)
  • First Holder: Edward Blayney, 1st Baron Blayney
  • Extinction: Baron Blayney extinct following the death of the 12th Baron in 1874
• The Baron Chichester (1625)
  • First Holder: Edward Chichester, 1st Baron Chichester
  • Elevation: 1st Baron Chichester created Viscount Chichester (1625)
• The Baron of Broghill (1628)
  • First Holder: Roger Boyle, 1st Baron Broghill
  • Elevation: 1st Baron Broghill created Earl of Orrery (1660)
• The Baron Coote (1660)
  • First Holder: Charles Coote, 1st Baron Coote
  • Elevation: 1st Baron Coote created Viscount Coote (1660) and subsequently Earl of Mountrath (1660)
  • Extinction: Baronry extinct following the death of the 7th Earl of Mountrath in 1802
  • Note: 7th Earl of Mountrath created Baron Castle Coote (1800) with special remainder
• The Baron Loughneagh (1660)
  • First Holder: John Clotworthy, 1st Baron Loughneagh
  • Elevation: 1st Baron Loughneagh created Viscount Massereene (1660)
• The Baron Coote (1660)
  • First Holder: Richard Coote, 1st Baron Coote
  • Elevation: 2nd Baron Coote created Earl of Bellomont (1689)
  • Note: Baron Coote (1660) continued following the extinction of the Earldom in 1766
  • Elevation: 5th Baron Coote created Earl of Bellomont (1767)
  • Extinction: Baron Coote (1660) extinct following death of 1st Earl of Bellomont in 1800
• The Baron Clanehugh (1675)
  • First Holder: Arthur Forbes, 1st Baron Clanehugh
  • Extinction: 1st Baron Clanehugh created Viscount Granard (1675) and Earl of Granard (1684)
• The Baron Tyaquin (1687)
  • First Holder: Ulick Bourke, 1st Baron Tyaquin
  • Elevation: 1st Baron Tyaquin created Viscount Galway (1687)
  • Extinction: Baron Tyaquin (1687) extinct following death of 1st Viscount Galway in 1691
• The Baron Castlerosse (1689)
  • First Holder: Sir Valentine Browne, 1st Baron Castlerosse
  • Elevation: 1st Baron created Viscount Kenmare (1689)
  • Note: The Third Baronet Browne was created First Viscount Kenmare (Ireland) on 20 May 1689, by King James II, after his deposition by the English Parliament, but while he still possessed his rights as King of Ireland. At the time James was presiding over the short-lived Patriot Parliament. The peerage remained on the Irish patent roll in a constitutionally ambiguous position, but was not recognized by the Protestant political establishment.
• The Baron Portarlington (1692)
• The Baron Fethard (1695)
  • First Holder: John Vaughan, 1st Baron Fethard
  • Elevation: 1st Baron Fethard created Viscount Lisburne (1695)
• The Baron Kilmayden (1703)
  • First Holder: Arthur St Leger, 1st Baron Kilmayden
  • Elevation: 1st Baron Kilmayden created Viscount Doneraile (1703)
  • Extinction: Baron Kilmayden (1703) extinct following death of 4th Viscount Doneraile in 1767
• The Baron Carbery (1715)
  • First Holder: George Evans, 1st Baron Carbery
• The Baron Brodrick (1715)
  • First Holder: Alan Brodrick, 1st Baron Brodrick
  • Elevation: 1st Baron Brodrick created Viscount Midleton (1717)
• The Baron Hamilton of Stackallan (1715)
  • First Holder: Gustavus Hamilton, 1st Baron Hamilton of Stackallan
  • Elevation: 1st Baron Hamilton of Stackallan created Viscount Boyne (1717)
• The Baron Philipstown (1716)
  • First Holder: Robert Molesworth, 1st Baron Philipstown
  • Elevation: 1st Baron Philipstown created Viscount Molesworth (1716)
• The Baron Rathdowne (1717)
  • First Holder: Walter Chetwynd, 1st Baron Rathdowne
  • Elevation: 1st Baron Rathdowne created Viscount Chetwynd (1717)
• The Baron Hill of Kilwarlin (1717)
  • First Holder: Trevor Hill, 1st Baron Hill of Kilwarlin
  • Elevation: 1st Baron Hill of Kilwarlin created Viscount Hillsborough (1717)
• The Baron Southwell (1717)
  • First Holder: Thomas Southwell, 1st Baron Southwell
  • Elevation: 3rd Baron Southwell created Viscount Southwell (1776)
• The Baron Aylmer (1718)
  • First Holder: Matthew Aylmer, 1st Baron Aylmer
• The Baron Charleville (1718)
  • First Holder: John Brownlow, 1st Baron Charleville
  • Elevation: 1st Baron Charleville created Viscount Tyrconnel (1718)
• The Baron Dunboyne (1719)
  • First Holder: William Grimston, 1st Baron Dunboyne
  • Elevation: 1st Baron Dunboyne created Viscount Grimston (1719)
• The Baron Beresford (1720)
  • First Holder: Marcus Beresford, 1st Baron Beresford
  • Elevation: 1st Baron Beresford created Viscount Tyrone (1720) and Earl of Tyrone (1746)
• The Baron Gage (1720)
  • First Holder: Thomas Gage, 1st Baron Gage
  • Elevation: 1st Baron Gage created Viscount Gage (1720)
• The Baron Clifton of Rathmore (1721)
  • First Holder: John Bligh, 1st Baron Clifton of Rathmore
  • Elevation: 1st Baron Clifton of Rathmore created Viscount Darnley (1723) and Earl of Darnley (1725)
• The Baron Culmore (1725)
  • First Holder: William Bateman, 1st Baron Culmore
  • Elevation: 1st Baron Culmore created Viscount Bateman (1725)
  • Extinction: Baron Culmore (1725) extinct following death of 2nd Viscount in 1802
• The Baron Killard (1727)
  • First Holder: John Monckton, 1st Baron Killard
  • Elevation: 1st Baron Killard created Viscount Galway (1727)
• The Baron Castle Durrow (1733)
  • First Holder: William Flower, 1st Baron Castle Durrow
  • Elevation: 2nd Baron Castle Durrow created Viscount Ashbrook (1751)
• The Baron Belfield (1728)
  • First Holder: Robert Rochfort, 1st Baron Belfield
  • Elevation: 1st Baron Belfield created Viscount Belfield (1751), and Earl of Belvedere (1756)
  • Extinction: Baron Belfield (1738) extinct following death of 2nd Earl in 1814
• The Baron Desart (1733)
  • First Holder: John Cuffe, 1st Baron Desart
  • Elevation: 3rd Baron created Viscount Desart (1781) and Earl of Desart (1793)
  • Extinction: Baronry extinct following the death of the 5th Earl of Desart in 1934
• The Baron Newport (1743)
  • First Holder: Robert Jocelyn, 1st Baron Newport
  • Elevation: 1st Baron Newport created Viscount Jocelyn (1755)
• The Baron Wingfield (1744)
  • First Holder: Richard Wingfield, 1st Baron Wingfield
  • Elevation: 1st Baron Wingfield created Viscount Powerscourt (1744)
• The Baron Mornington (1746)
  • First Holder: Richard Wesley, 1st Baron Mornington
  • Elevation: 2nd Baron Mornington created Viscount Wellesley (1760) and Earl of Mornington (1760)
• The Baron Kingsborough (1748)
  • First Holder: Robert King, 1st Baron Kingsborough
  • Extinction: Baron Kingsborough (1748) extinct following the death of 1st Baron in 1755
• The Baron Knapton (1750)
  • First Holder: John Denny Vesey, 1st Baron Knapton
  • Elevation: 2nd Baron Knapton created Viscount de Vesci (1776)
• The Baron Loftus (1751)
  • First Holder: Nicholas Loftus, 1st Baron Loftus
  • Elevation: 1st Baron Loftus created Viscount Loftus (1756)
  • Extinction: Baron Loftus (1751) extinct following the death of 1st Earl of Ely (4th Baron) in 1783
• The Baron Dunkeron (1751)
  • First Holder: John Petty, 1st Baron Dunkeron
  • Elevation: 1st Baron Dunkeron created Viscount FitzMaurice (1751) and Earl of Shelburne (1753)
• The Baron Conyngham (1753)
  • First Holder: Henry Conyngham, 1st Baron Conyngham
  • Elevation: 1st Baron Conyngham created Viscount Conyngham (1756) and Earl Conyngham (1781)
  • Extinction: Baron Conyngham (1753) extinct following death of 1st Earl in 1781
• The Baron Pollington (1753)
  • First Holder: John Savile, 1st Baron Pollington
  • Elevation: 1st Baron Pollington created Viscount Pollington (1753) and Earl of Mexborough (1766)
• The Baron Farnham (1756)
  • First Holder: John Maxwell, 1st Baron Farnham
  • Elevation: 2nd Baron Farnham created Viscount Farnham (1760) and Earl of Farnham (1763)
  • Note: Baron Farnham (1756) continued following extinction of Viscountcy and Earldom in 1779
  • Elevation: 3rd Baron Farnham created Viscount Farnham (1781) and Earl of Farnham (1785)
  • Note: Baron Farnham (1756) continued following extinction of Viscountcy and Earldom in 1823
• The Baron Castle Martyr (1756)
  • First Holder: Henry Boyle, 1st Baron Castle Martyr
  • Elevation: 1st Baron Castle Martyr created Viscount Boyele (1756) and Earl of Shannon (1756)
• The Baron Longford (1756)
  • First Holder: Thomas Pakenham, 1st Baron Longford
  • Elevation: 3rd Baron Longford succeeded as 2nd Earl of Longford (1785) in 1794
• The Baron Ibracken (1756)
  • First Holder: Percy Wyndham-O'Brien, 1st Baron Ibracken
  • Elevation: 1st Baron created Earl of Thomond (1756)
  • Extinction: Baron Ibracken (1756) extinct following death of 1st Earl in 1774
• The Baron Lisle (1758)
  • First Holder: John Lysaght, 1st Baron Lisle
• The Baron Saunders (1758)
  • First Holder: Arthur Gore, 1st Baron Saunders
  • Elevation: 1st Baron Saunders created Viscount Sudley (1758) and Earl of Arran (1762)
• The Baron Courtown (1758)
  • First Holder: James Stopford, 1st Baron Courtown
  • Elevtion: 1st Baron Courtown created Viscount Stopford (1762) and Earl of Courtown (1762)
• The Baron Annesley (1758)
  • First Holder: William Annesley, 1st Baron Annesley
  • Elevation: 1st Baron Annesley created Viscount Glerawly (1766)
• The Baron Headfort (1760)
  • First Holder: Thomas Taylour, 1st Baron Headfort
  • Elevation: 1st Baron Headfort created Viscount Headfort (1762) and Earl of Bective (1766)
• The Baron Mount Eagle (1760)
  • First Holder: John Browne, 1st Baron Mount Eagle
  • Elevation: 1st Baron Mount Eagle created Viscount Westport (1768) and Earl of Altamont (1771)
• The Baron Mountflorence (1760)
  • First Holder: John Cole, 1st Baron Mountflorence
  • Elevation: 2nd Baron Mountflorence created Viscount Enniskillen (1776) and Earl of Enniskillen (1789)
• The Baron Winterton (1761)
  • First Holder: Edward Garth-Turnour, 1st Baron Winterton
  • Elevation: 1st Baron Winterton created Viscount Turnour (1766) and Earl Winterton (1766)
• The Baron Baltinglass (1763)
  • First Holder: John Stratford, 1st Baron Baltinglass
  • Elevation: 1st Baron Baltinglass created Viscount Aldborough (1776), Viscount Amiens (1777) and Earl of Aldborough (1777)
  • Extinction: Baronry extinct following the death of the 6th Earl of Aldorough in 1875
• The Baron Kingston (1764)
  • First Holder: Edward King, 1st Baron Kingston
  • Elevation: 1st Baron Kingston created Viscount Kingston (1766) and Earl of Kingston (1768)
• The Baron Gillford (1766)
  • First Holder: John Meade, 1st Baron Gillford
  • Elevation: 1st Baron Gillford created Viscount Clanwilliam (1766) and Earl of Clanwilliam (1776)
• The Baron Annaly (1766)
  • First Holder: John Gore, 1st Baron Annaly
  • Extinction: Baron Annaly (1766) extinct following the death of 1st Baron Annaly in 1784
• The Baron Erne (1768)
  • First Holder: Abraham Creighton, 1st Baron Erne
  • Elevation: 2nd Baron Erne created Viscount Erne (1781) and Earl Erne (1789)
• The Baron Lifford (1768)
  • First Holder: James Hewitt, 1st Baron Lifford
  • Elevation: 1st Baron Lifford created Viscount Lifford (1781)
• The Baron Dawson (1770)
  • First Holder: William Henry Dawson, 1st Baron Dawson
  • Elevation: 2nd Baron Dawson created Viscount Carlow (1776) and Earl of Portarlington (1785)
• The Baron Bangor (1770)
  • First Holder: Bernard Ward, 1st Baron Bangor
  • Elevation: 1st Baron Bangor created Viscount Bangor (1781)
• The Baron Clermont (1770)
  • First Holder: William Henry Fortescue, 1st Baron Clermont
  • Elevation: 1st Baron Clermont created Viscount Clermont (1776) and Earl of Clermont (1777)
  • Extinction: Baronty extinct following the death of the 1st Earl of Clermont in 1806
• The Baron Newborough (1776)
  • First Holder: Thomas Wynn, 1st Baron Newborough
• The Baron Macdonald (1776)
  • First Holder: Alexander Macdonald, 1st Baron Macdonald
• The Baron Kensington (1776)
  • First Holder: William Edwardes, 1st Baron Kensington
• The Baron Massy (1776)
  • First Holder: Hugh Massy, 1st Baron Massy
• The Baron Naas (1776)
  • First Holder: John Bourke, 1st Baron Naas
  • Elevation: 1st Baron Nass created Viscount Mayo (1781) and Earl of Mayo (1785)
• The Baron Lucan (1776)
  • First Holder: Charles Bingham, 1st Baron Lucan
  • Elevation: 1st Baron Lucan created Earl of Lucan (1795)
• The Baron Gosford (1776)
  • First Holder: Archibald Acheson, 1st Baron Gosford
  • Elevation: 1st Baron Gosford created Viscount Gosford (1785)
• The Baron Doneraile (1776)
  • First Holder: St Leger St Leger, 1st Baron Doneraile
  • Elevation: 1st Baron Doneraile created Viscount Doneraile (1785)
• The Baron Milford (1776)
  • First Holder: Richard Philipps, 1st Baron Milford
  • Extinction: Baron Milford extinct following death of 1st Baron in 1823
• The Baron de Montalt (1777)
  • First Holder: Cornwallis Maude, 1st Baron de Montalt
  • Elevation: 1st Baron de Montalt created Viscount Harwarden (1793)
• The Baron Rokeby (1777)
  • First Holder: Richard Robinson, 1st Baron Rokeby
  • Extinction: Baron Rokeby extinct following death of 6th Baron in 1883
• The Baron Conyngham (1781)
  • First Holder: Henry Conyngham, 1st Baron Conyngham
  • Elevation: 2nd Baron Conyngham created Viscount Conyngham (1789), Earl Conyngham (1797) and Marquess Conyngham (1816)
• The Baron Muskerry (1781)
  • First Holder: Robert Tilson Deane, 1st Baron Muskerry
• The Baron Belmore (1781)
  • First Holder: Armar Lowry-Corry, 1st Baron Belmore
  • Elevation: 1st Baron Belmore created Viscount Belmore (1789) and Earl Belmore (1797)
• The Baron Welles (1781)
  • First Holder: Thomas Knox, 1st Baron Welles
  • Elevation: 1st Baron Welles created Viscount Northland (1791)
• The Baron Sheffield (1781)
  • First Holder: John Baker Holroyd, 1st Baron Sheffield
  • Elevation: 1st Baron Sheffield created Viscount Pevensey (1816) and Earl of Sheffield (1816)
  • Extinction: Baron Sheffield (1781) extinct following death of 3rd Earl in 1909
• The Baron Sheffield (1783), Stanley of Alderley (UK, 1839) and Eddisbury (UK, 1848) (known as the Lord Stanley of Alderley)
  • First Holder: John Baker Holroyd, 1st Baron Sheffield
  • Note: 1st Baron Sheffield (1783) had been created Baron Sheffield (1781) was subsequently created Earl of Sheffield (1816)
• The Baron Donoughmore (1783)
  • First Holder: Christiana Hely-Hutchinson, 1st Baroness Donoughmore
  • Elevation: 2nd Baron Donoughmore created Viscount Donoughmore (1797) and Earl of Donoughmore (1800)
• The Baron Harberton (1783)
  • First Holder: Arthur Pomeroy, 1st Baron Harberton
  • Elevation: 1st Baron Harberton created Viscount Harberton (1791)
• The Baron Leitrim (1783)
  • First Holder: Robert Clements, 1st Baron Leitrim
  • Elevation: 1st Baron Leitrim created Viscount Leitrim (1793) and Earl of Leitrim (1795)
  • Extinction: Baronty extinct following the death of the 5th Earl of Leitrim in 1952
• The Baron Loftus (1785)
  • First Holder: Charles Loftus, 1st Baron Loftus
  • Elevation: 1st Baron Loftus created Viscount Loftus (1789), Earl of Ely (1794) and Marquess of Ely (1800)
• The Baron Londonderry (1789)
  • First Holder: Robert Stewart, 1st Baron Londonderry
  • Elevation: 1st Baron Londonderry created Viscount Castlereagh (1795), Earl of Londonderry (1796) and Marquess of Londonderry (1816)
• The Baron Auckland (1789)
  • First Holder: William Eden, 1st Baron Auckland
  • Note: 2nd Baron Auckland created Earl of Auckland (1839) in the Peerage of the United Kingdom
  • Note: Baron Auckland (1789) continued following extinction of the Earldom
• The Baron Kilmaine (1789)
  • First Holder: John Browne, 1st Baron Kilmaine
• The Baron Cloncurry (1789)
  • First Holder: Nicholas Lawless, 1st Baron Cloncurry
  • Note: 2nd Baron created Baron Cloncurry (1831) in the Peerage of the United Kingdom
  • Extinction: Baronry extinct following the death of the 5th Baron in 1929
• The Baron Annaly (1789)
  • First Holder: Henry Gore, 1st Baron Annaly
  • Note: Henry Gore was the younger brother of John Gore, 1st Baron Annaly (1766)
  • Extinction: Baron Annaly (1789) extinct following the death of 1st Baron Annaly in 1793
• The Baron Caledon (1790)
  • First Holder: James Alexander, 1st Baron Caledon
  • Elevation: 1st Baron Caledon created Viscount Caledon (1797) and Earl of Caledon (1800)
• The Baron Glentworth (1790)
  • First Holder: William Cecil Pery, 1st Baron Glentworth
  • Elevation: 2nd Baron Glentworth created Viscount Limerick (1800) and Earl of Limerick (1803)
• The Baron Oriel (1790)
  • First Holder: John Foster, 1st Baron Oriel
  • Note: 2nd Baron Oriel succeeded as 2nd Viscount Ferrard (1797)
• The Baron Waterpark (1792)
  • First Holder: Sarah Cavendish, 1st Baroness Waterpark
• The Baron Oxmantown (1792)
  • First Holder: Laurence Parsons, 1st Baron Oxmantown
  • Elevation: 1st Baron Oxmantown created Viscount Oxmantown (1795) and Earl of Rosse (1806)
• The Baron Graves (1794)
  • First Holder: Thomas Graves, 1st Baron Graves
• The Baron Somerton (1795)
  • First Holder: Charles Agar, 1st Baron Somerton
  • Elevation: 1st Baron Somerton created Viscount Somerton (1800) and Earl of Normanton (1806)
• The Baron Longueville (1795)
  • First Holder: Richard Longfield, 1st Baron Longueville
  • Elevation: 1st Baron Longueville created Viscount Longueville (1800)
  • Extinction: Baronry extinct following the death of the 1st Viscount in 1811
• The Baron Huntingfield (1796)
  • First Holder: Joshua Vanneck, 1st Baron Huntingfield
• The Baron Rossmore (1796)
  • First Holder: Robert Cuninghame, 1st Baron Rossmore
• The Baron Monck (1797)
  • First Holder: Charles Stanley Monck, 1st Baron Monck
  • Elevation: 1st Baron Monck created Viscount Monck (1801)
• The Baron Hotham (1797)
  • First Holder: William Hotham, 1st Baron Hotham
• The Baron Crofton (1797)
  • First Holder: Anne Crofton, 1st Baroness Crofton
• The Baron Kilconnel (1797)
  • First Holder: William Power Keating Trench, 1st Baron Kilconnel
  • Elevation: 1st Baron Kilconnel created Viscount Dunlo (1801) and Earl of Clancarty (1803)
• The Baron Norwood (1797)
  • First Holder: Grace Toler, 1st Baroness Norwood
  • Note: 2nd Baron Norwood succeeded as 2nd Baron Norbury (1800)
  • Note: 3rd Baron Norwood succeeded as 2nd Earl Norbury (1827)
• The Baron Tyrawley (1797)
  • First Holder: James Cuffe, 1st Baron Tyrawley
  • Extinction: Baronry extinct following the death of the 1st Baron in 1821
• The Baron ffrench (1798)
  • First Holder: Rose ffrench, 1st Baroness ffrench
• The Baron Castlerosse (1798)
  • First Holder: Valentine Browne, 1st Baron Castlerosse
  • Elevation: 1st Baron created Viscount Kenmare (1798) and Earl of Kenmare (1801
  • Extinction: Baronry extinct following the death of the 7th Earl of Kenmare in 1952
• The Baron Henley (1799) and Northington (UK,1885) (known as the Lord Henley)
  • First Holder: Morton Eden, 1st Baron Henley
• The Baron Langford (1800)
  • First Holder: Clotworthy Rowley, 1st Baron Langford
• The Baron Dufferin and Claneboye (1800)
  • First Holder: Dorcas Blackwood, 1st Baroness Dufferin and Claneboye
  • Note: 5th Baron Dufferin and Claneboye created Earl of Dufferin (1871) and Marquess of Dufferin and Ava (1888)
• The Baron Henniker (1800) and Hartismere (UK,1886) (known as the Lord Henniker)
  • First Holder: John Henniker, 1st Baron Henniker
• The Baron Ventry (1800)
  • First Holder: Thomas Mullins, 1st Baron Ventry
• The Baron Dunalley (1800)
  • First Holder: Henry Sadlier Prittie, 1st Baron Dunalley
• The Baron Clanmorris (1800)
  • First Holder: John Bingham, 1st Baron Clanmorris
• The Baron Ashtown (1800)
  • First Holder: Frederick Trench, 1st Baron Ashtown
• The Baron Ennismore (1800)
  • First Holder: William Hare, 1st Baron Ennismore
  • Elevation: 1st Baron Ennismore created Viscount Ennismore and Listowel (1816) and Earl of Listowel (1822)
• The Baron Norbury (1800)
  • First Holder: John Toler, 1st Baron Norbury
  • Elevation: 1st Baron Norbury created Earl of Norbury (1827)
• The Baron Castle Coote (1800)
  • First Holder: Charles Henry Coote, 7th Earl of Mountrath, 1st Baron Castle Coote
  • Extinction: Baronry extinct following the death of the 3rd Baron Castle Coote in 1827
• The Baron Mount Sandford (1800)
  • First Holder: Henry Moore Sandford, 1st Baron Mount Sandford
  • Extinction: Baronry extinct following death of 3rd Baron Mount Sandford in 1846
• The Baron Newcomen (1800)
  • First Holder: Charlotte Gleadowe-Newcomen, 1st Baroness Newcomen
  • Elevation: 1st Baroness Newcomen created Viscountess Newcomen (1803)
  • Extinction: Baronry extinct following the death of the 2nd Viscount Newcomen in 1825
• The Baron Rendlesham (1806)
  • First Holder: Peter Isaac Thellusson, 1st Baron Rendlesham
• The Baron Kiltarton (1810)
  • First Holder: John Prendergast Smyth, 1st Baron Kiltarton
  • Elevation: 1st Baron Kiltarton created Viscount Gort (1816)
• The Baron Castlemaine (1812)
  • First Holder: William Handcock, 1st Baron Castlemaine
  • Elevation: 1st Baron Castlemaine created Viscount Castlemaine (1822)
  • Note: Baron Castlemaine (1812) continued following extinction of Viscountcy in 1839
• The Baron Decies (1812)
  • First Holder: William Beresford, 1st Baron Decies
• The Baron Garvagh (1818)
  • First Holder: George Canning, 1st Baron Garvagh
• The Baron Talbot of Malahide (1831)
  • First Holder: Margaret Talbot, 1st Baroness Talbot of Malahide
• The Baron Carew (1834, and UK 1838)
  • First Holder: Robert Shapland Carew, 1st Baron Carew
• The Baron Oranmore and Browne (1836) and Mereworth (UK, 1926) (known as the Lord Oranmore and Browne)
  • First Holder: Dominick Browne, 1st Baron Oranmore and Browne
• The Baron Bellew (1847)
  • First Holder: Edmond Burke Roche, 1st Baron Fermoy
• The Baron Clermont (1852)
  • First Holder: Thomas Fortescue, 1st Baron Clermont
  • Extinction: Baronry extinct following the death of the 2nd Baron Clermont in 1898
• The Baron Fermoy (1856)
  • First Holder: Edmond Burke Roche, 1st Baron Fermoy
• The Baron Rathdonnell (1868)
  • First Holder: John McClintock, 1st Baron Rathdonnell