Monk at Lindisfarne, England. Friend of Saint Colman of Lindesfarne. Monk at Innisboffin, Ireland in 668. Abbot at Mayo of the Saxons abbey in 670, a house for English monks in Ireland; he there served until 697 when he resigned in favour of Saint Adamnan. Saw the supplanting of the Celtic rite with the Roman rite in his abbey. Founded the abbey of Elytheria in Connaught, Ireland; of Teaghna-Saxon; and a convent led by his sister Segretia. May have been bishop of Mayo, Ireland, but records vary.
- Book of Saints, by the Monks of Ramsgate
- Catholic Encyclopedia
- Katherine Rabenstein
- Kirken i Norge
- Lives of the Saints, by Father Alban Butler
- Our Sunday Visitor’s Encyclopedia of Saints
- “Saint Gerald of Mayo“. Saints.SQPN.com. 11 July 2013. Web. 9 December 2013. <>