(died 660) Confessor, Abbot of Clynnog Fawr, born Powis-land, Wales; died Carnarvonshire. He studied in the monastery of Bangor, North Wales, where he was ordained priest, and became active in missionary work. Cadvan, King of Gwynedd, was his benefactor. In 616 he founded the Abbey of Clynnog Fawr in Carnarvonshire. According to tradition he restored his niece Saint Winefride to life at Holywell where many miracles have since then taken place. Eleven churches and a Jesuit house, formerly of theological studies, now of novices and tertiaries, in the Diocese of Saint Asaph are named for him. Feast, 21 April.