Beuno of Wales, Abbot: Hagiography includes legendary material.Catholic Encyclopedia: St. Beuno: Welsh, said to have been educated at Bangor and, after ordination, to have become a missionary. Abbot of Clynnog, and uncle of St. Winifred. Died perhaps in 660. Feast day: 21 April.Catholic Online: St. Beuno: Very brief profile.St. Beuno Gasulsych: Biography of Beuno, the uncle of St. Winifred, who died on 21st April AD 640.