Also known as Saint Eunan. Abbot, born Drumhome, Donegal, Ireland, c.624; died Iona, Ireland, 704. He entered the monastery of Iona, 650, and was elected abbot in 679. On a visit to Ireland he introduced the Roman method of reckoning Easter. He is the author of a biography of Saint Columba and “Adamnan’s Vision.” First bishop of the diocese of Raphoe, Ireland, and one of its patron saints. Feast, 23 September.