William III, 5th Earl of Ross

Is your surname de Ross?

Research the de Ross family

William III, 5th Earl of Ross's Geni Profile

Records for William de Ross

25,613 Records

Share your family tree and photos with the people you know and love

  • Build your family tree online
  • Share photos and videos
  • Smart Matching™ technology
  • Free!


Related Projects

William de Ross, Earl of Ross

Scots Gaelic: Uilleam mac Aodh O'Beolan, Mormaer na Rois, Latin: Willelmum de Ross, Earl of Ross
Also Known As: "Uilleam III of Ross"
Birthdate: (63)
Birthplace: Fearn, Ross, Ross And Cromarty, Scotland
Death: Died in Delny, Ross And Cromarty,Scotland
Place of Burial: Kilfinichen & Kilvickeon, Argyllshire
Immediate Family:

Son of Hugh, 4th Earl of Ross and Matilda (Maud) Bruce
Husband of Fionnuala MacDonald and Mary MacDonald
Father of Euphemia Leslie, Countess of Ross; Joanna / Janet Fraser and William Ross
Brother of Marjory de Ross and John Ross
Half brother of Hugh Ross, 1st of Balnagowen; Jean de Ross; Lillias de Ross and Euphemia de Ross, Queen Consort of Scotland

Occupation: Justiciar of Scotia
Managed by: Gwyneth McNeil
Last Updated:

About William III, 5th Earl of Ross

Uilleam III, Earl of Ross From Wikipedia, the free encyclopedia http://en.wikipedia.org/wiki/Uilleam_III,_Earl_of_Ross

Uilleam (or William) III of Ross was the fourth successor of Ferchar mac in tSagairt, as Mormaer of Ross (1333/6-1370).

Uilleam came into his inheritance at a torrid time, his father Aodh dying at the Battle of Halidon Hill. Uilleam temporarily lost many of his lands. However, he returned from Norway in 1336 and regained them. Uilleam cultivated the friendship of the Stewarts, and was rewarded by being appointed Justiciar of Scotia. Uilleam's reign was marked by continued strife with his nominal vassal, Ranald MacRuadridh (Lord of Skye). In 1348, Uilleam killed Ranald with eight of his men at the nunnery of Elcho.

Uilleam married Màiri, the daughter of Aonghas Óg MacDomhnaill. They had an heir, Uilleam, but he died in 1357. Uilleam's lands were forfeited by King David II in 1370. Uilleam died in 1372, and the Mormaerdom was given to his daughter Euphemia with her husband Sir Walter Leslie, thus ending the dynasty started a century and a half before by the great Ferchar. The dominions eventually passed to the MacDonald Lords of the Isles.


Roberts, John L., Lost Kingdoms: Celtic Scotland in the Middle Ages, (Edinburgh, 1997)

External links

Genealogy Page Great Clan Ross (N/B Unfortunately, much info depends on this unreliable site) Preceded by Aodh Mormaer of Ross 1333/6-1370/2 Succeeded by Euphemia m. Walter Leslie

view all

William III, 5th Earl of Ross's Timeline

Fearn, Ross, Ross And Cromarty, Scotland
Age 11
Age 36
Ross & Cromarty, Scotland
Age 41
Ross & Cromarty, Scotland
February 9, 1372
Age 63
Delny, Ross And Cromarty,Scotland
Kilfinichen & Kilvickeon, Argyllshire