Aidan of Lindisfarne (Irish: Naomh Aodhán; died 31 August 651) was an Irish monk and missionary credited with converting the Anglo-Saxons to Christianity in Northumbria.
He founded a ministry cathedral on the island of Lindisfarne, known as Lindisfarne Priory, served as its first bishop, and travelled ceaselessly throughout the countryside,
spreading the gospel to both the Anglo-Saxon nobility and the socially disenfranchised (including children and slaves).

He is known as the Apostle of Northumbria and is recognized as a saint by the Catholic Church, the Eastern Orthodox Church, the Anglican Communion, and others.
(Wikipaedia)