Rev. Alban Butler (171173). Volume V: May. The Lives of the Saints. 1866.
St. Dumhade of Ireland, Abbot
HE was an Irish or Scottish monk, who being made abbot of Hij, or St. Columkilles great monastery, introduced the Roman manner of celebrating Easter. After governing that abbey ten years, he died in 717. He is titular saint of the church of Kilclocair in the diocess of Armagh. See Colgan in MSS. ad 25 Maij.