(Teutonic: formidably bright)
Bishop, confessor (c.639-729) died Iona. He was a Northumbrian monk who received his habit at Lindisfarne and studied at Rathmelsigi (Melifont), Ireland. He was instrumental in sending missionaries to the pagan tribes of Friesland. He went to Iona where he spent the last 13 years of his life, reforming the monasteries of Saint Columba, and persuading the monks to relinquish their erroneous mode of computing Easter.