From A Compendium of Irish Biography, 1878
Dubdalethy, son of Maelmurry, Abbot of Armagh, was the author of a Chronicle of Ireland quoted in the Annals of Ulster and Annals of the Four Masters. He was Reader of Divinity at Armagh, was Abbot, or successor of Patrick in 1050, and died 1st September 1065.
339. Ware, Sir James, Works: Walter Harris. 2 vols. Dublin, 1764.