King of Dal Riada.
Came from Ulster with his brothers, Fergus II and Angus (The concise dictionary of national biography. Part 1 : from the beginnings till 1900. London : Oxford University Press, 1969, pg. 426). aka Loarn (Moncreiffe, Iain. The highland clans. NY : C.N. Potter, rev. ed., c1982, lining papers). Descendants in Moncreiffe, lining papers.