"A New History of Ireland". Byrne's "Irish Kings and High Kings". He is said to have been baptized by St. Patrick.

He joined three of his brothers in taking the entire northwest corner of Ireland from the Ulidians who had held it, around 425. He established his kingdom in the Peninsula of Innisowen (Eoghan's Island). He converted to Christianity about 442. He married Indorb Fionn, a foreign princess, and was ancestor of Cenel Eoghain, the principal family of whom were the O Neills.9