(Eugenius) (died c.618) First Bishop of Ardstraw, born Leinster, Ireland. As a boy he was carried off to Britain and subsequently to Brittany by pirates. Returning to Ireland, he presided over the Abbey of Kilnamanagh, County Wicklow. Among his disciples was Saint Kevin of Glendalough. He was consecrated Bishop of Ardstraw, c.581. The see was transferred to Derry in the 13th century, and Eoghan is today the tutelary guardian of the See of Derry. Feast, 23 August.