Around AD 635, Saint Oswald (5 August), King of Northumbria, appealed to the monks of the Monastery of Iona to send missionaries to his mostly-pagan kingdom. (An earlier mission had ended with the death of St Edwin in 633.) The fathers of the monastery chose St Aidan and consecrated him bishop. He founded a monastery (and his episcopal seat) on the island of Lindisfarne, and undertook missionary journeys, always on foot, throughout the kingdom, with King Oswald often accompanying him and serving as his interpreter. He lived in great poverty, using all the gifts he received as alms for the poor or to buy back captives and slaves. He was the spiritual father of St Hilda (17 Nov.), and founded the first women’s monasteries in Northumbria. He reposed in peace in 651, and was buried at Lindisfarne.
Note: Northumbria was an Anglo-Saxon kingdom in what is now northeastern England and southern Scotland.