Eógan established his kingdom in the Peninsula of Innishowen (i.e., Innis Eoghain or ‘Eogan's Isle'). One of his sons was Eochaid Binnigh (‘the tuneful'), ancestor of St Maelrubha (642–722), founder in 673 of Applecross Abbey in Pictland. Eógan was ancestor of the Cenel Eoghain, the pincipal brother of the northern Ui Neill. Circa 425 he joined three of his brothers in wresting the entire northwest corner of Ireland from the Ulidians who had hitherto held it. Circa 442 he converted to Christianity.
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