Aidan of Lindisfarne, born in Ireland, may have studied under St Senan before becoming a monk at Iona. At the request of King Oswald of Northumbria, Aidan went to Lindisfarne as bishop and was known throughout the kingdom for his knowledge of the Bible, his learning, his eloquent preaching, his holiness, his distaste for pomp, his kindness to the poor, and the miracles attributed to him. He founded a monastery at Lindisfarne that became known as the English Iona and was a centre of learning and missionary activity for all of northern England. He died in 651 at the royal castle at Bamburgh. – Catholic Online