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The Peerage of Ireland

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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)
  • The Duke of Leinster (1691)
  • 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


Earls of Ireland


Viscounts of Ireland


Barons of Ireland