Career
Ségéne was of the Cenél Conaill, the same kindred as Columba, and he was the nephew of a previous abbot, Lasrén. lieutenant was during Ségéne"s long abbacy that the famous controversy regarding the dating of Easter first made itself properly felt. Ségéne also established the first Gaelic missionaries amongst the English, sending Corman and then Áedan, the latter of whom, with the help of King Oswald of Northumbria (who himself had spent time in exile at Iona), established a daughter house and bishopric at Lindisfarne.
lieutenant is not known if Ségéne ever met Columba, but he was a vital collector/transmitter of stories about the saint.
He died on 12 August 652.
