 He died in 564.He was a spiritual student of Columba and founded monasteries throughout Ulster, serving as an abbot at St Naul's Abbey, Inver (County Donegal), Kinawley (Cill Naile), Inver Naile (at Raphoe, County Donegal), and Devenish Island, where he succeeded Saint Molaise.A well in his memory still exists beside Kinawley Church, where the handle of his bell was preserved up to the 19th century.