St. Beuno is mentioned in the Acts of St Winefride as her uncle and the spiritual guide of her early years. He was the founder of the Monastery of Clunnock Vaur, in Caernarvonshire, which in later times passed into the hands of the Cistercians, and possessed one of the finest churches in Wales. It was in this retreat that he was called to his everlasting rest. The ancient day of his commemoration is not known ; but the 21st April was assigned to it by Pope Pius IX, in favour of the College of the Society of Jesus, which bears his name, near St. Asaph.
The Catholic Encyclopedia is little more forthcoming with details: ‘Abbot of Clynnog, d. 660(?), was, according to the “Bucced Beuno”, born in Powis-land and, after education and ordination in the monastery of Bangor, in North Wales, became an active missioner, Cadvan, King of Gwynedd, being his generous benefactor. Cadwallon, Cadvan’s son and successor, deceived Beuno about some land, and on the saint demanding justice proved obdurate. Thereupon, Cadwallon’s cousin Gweddeint, in reparation, “gave to God and Beuno forever his township”, where the saint (c. 616) founded the Abbey of Clynnog Fawr (Carnarvonshire).
‘Beuno became the guardian and restorer to life of his niece, the virgin St. Winefride, whose clients still obtain marvellous favours at Holywell (Flintshire). He was relentless with hardened sinners, but full of compassion to those in distress. Before his death “on the seventh day of Easter” he had a wondrous vision. Eleven churches bearing St. Beuno’s name, with various relics and local usages, witness to his far-reaching missionary zeal. He is commemorated on the 21st of April.’
And indeed the Jesuits still run the Ignatian Spirituality Centre named for St Beuno, in St Asaph in north Wales. It puts me in mind of ‘Britain’s only residential library, St Deiniol’s, not far from Chester.