Baring-Gould’s sources: Wilson's Anglican Martyrology of 1608, Castellanus, Saussaye, Ferrarins, Bucelinus, Menardus, and Mayhew. In Northumberland on Oct. 23. Authority: — The Acts in Capgravc.] S. Ywi was the son of a British chief named Bran, and an English mother named Egitha. He was brought up in the neighbourhood of Lindisfame, and his father in vain endeavoured to persuade him to embrace the career of arms. Ywi sought a better warfare, and enrolled himself in the army of the Lord. He was ordained by S. Cuthbert, and became his devoted disciple.

One day when S. Cuthbert [bishop of Lindisfarne (d. 687)] was at the altar saying mass, and Ywi was acting as his deacon, Ywi noticed a poor man struck with ague who could scarcely support himself on his staff. Ywi stepped down to him, caught him by the hand, and drew him to S. Cuthbert at the altar, and the man was instantly made whole. He went aboard ship to visit the monasteries of the saints in Brittany, and was nearly wrecked. The boat was more than a week at sea, and when Ywi reached land he was so ill that he died. His body was carried back to England and buried at Wilton near Salisbury. The date of his death cannot be fixed with certainty.