Fergno Britt

Fergno Britt (Fergna, Fergnae) mac Faílbi was the fourth abbot of the monastery of Iona, from 605 to 623. He died in 623; Ségéne succeeded him. Our sources describe him as an abbot, not as a saint, and mention no veneration, feast day or miracles; so we cannot say that he is venerated as a saint.

He was not of the Cenél Conaill, the kin-⁠group of Saint Columba; he may have been British and a bishop. Adomnán, in the Life of Columba, calls him "a young man of good ability" and tells that he witnessed a vision: a strong light surrounded Columba as he prayed in the chapel at Iona. The vision was related to Adomnán by Fergno's nephew, the priest Commán.