Ruaidhrí Mac Ruaidhrí

Ruaidhrí Mac Ruaidhrí
Ostensibly Ruaidhrí's surname and title as they appear on folio 82v (part 2) of Royal Irish Academy MS P 6 (the Annals of the Four Masters). The entry records the death of a member of Clann Ruaidhrí, likely Ruaidhrí himself, in 1318.
Predecessor	Ailéan mac Ruaidhrí
Successor	Raghnall Mac Ruaidhrí
Died	14 October 1318? Battle of Faughart?
Noble family	Clann Ruaidhrí
Issue Raghnall and Áine
Father	Ailéan mac Ruaidhrí

Ruaidhrí Mac Ruaidhrí (died 14 October 1318?) was a fourteenth-century Scottish magnate and chief of Clann Ruaidhrí. He was an illegitimate son of Ailéan mac Ruaidhrí, and is recorded to have participated in the kindred's military actions against supporters of both the English Crown and Scottish Crown. Following the apparent death of his brother, Lachlann, Ruaidhrí appears to have taken control of the kindred, and firmly aligned the family with Robert I, King of Scotland. Ruaidhrí may well be the member of Clann Ruaidhrí who is recorded slain at the Battle of Faughart in support of the Bruce cause in Ireland. After his death, Ruaidhrí's half-sister, Cairistíona, attempted to transfer the Clann Ruaidhrí territories outwith the family. Ruaidhrí was survived by a daughter, Áine, and an illegitimate son, Raghnall. The latter fended off Cairistíona's actions and succeeded to the chiefship of Clann Ruaidhrí.

Ruaidhrí was an illegitimate son of Ailéan mac Ruaidhrí (died ×1296), a son of Ruaidhrí mac Raghnaill, Lord of Kintyre (died 1247?),eponym of Clann Ruaidhrí. Ailéan had another illegitimate son,Lachlann Mac Ruaidhrí (fl. 1297–1307/1308), and a legitimate daughter,Cairistíona (fl. 1290–1318). It was Ruaidhrí's generation—the second generation in descent from Ruaidhrí mac Raghnaill—that members of Clann Ruaidhrí are first identified with a family name derived from this eponymous ancestor. For example, in one record the sons of Ailéan are called "filiis Rodrici". Clann Ruaidhrí was a branch of Clann Somhairle. Other branches of this overarching kindred included Clann Dubhghaill and Clann Domhnaill. Ailéan disappears from record by 1296, and seems to have died at some point before this date. Although Cairistíona seems to have been Ailéan's heir, she was evidently supplanted by her brothers soon after his death.