Aidan of Lindisfarne, Irish bishop and saint
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 monastic 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 recognised as a saint by the Eastern Orthodox Church, the Catholic Church, the Anglican Communion and others.