Irish Origins and Foundations
Columba was born at Gartan in Tyrconnell (modern Donegal), in the territory of the Ui Neill, and tradition names his parents as Fedhlimidh and Eithne. His descent from Niall of the Nine Hostages placed him within one of the most powerful kindreds of early medieval Ireland. He entered monastic life and was ordained to the priesthood, and before leaving Ireland he was associated with the founding of several monastic communities, among them Derry and Durrow.
The tradition connects his departure from Ireland with a quarrel over a psalter that Columba had copied from a manuscript belonging to Finnian of Moville, a dispute that became bound up with the Battle of Cul Dreimhne in 561. As penance, and on the advice of an aged hermit, Columba undertook to leave his homeland and to win souls for Christ, an exile that shaped the remainder of his life.