This saint, who was formerly honoured with great devotion in Wales, was son to the king of the Dimetians in South-Wales. After the death of his father, though the eldest son, he divided the kingdom with his six brothers, who nevertheless respected and obeyed him as if he had been their sovereign. He married Gladusa, daughter of Braghan, prince of that country, which is called from him Brecknockshire, and was father of Saint Canoe and Saint Keyna. Saint Gundleus had by her the great Saint Cadoc, who afterwards founded the famous monastery of Llancarvan, three miles from Cowbridge, in Glamorganshire. Gundleus lived so as to have always in view the heavenly kingdom for which we are created by God. To secure this, he retired wholly from the world long before his death, and passed his time in a solitary little dwelling near a church which he had built. His clothing was sack-cloth, his food was barley-bread, upon which he usually strewed ashes, and his drink was water. Prayer and contemplation were his constant occupation, to which he rose at midnight, and he subsisted by the labour of his hands: thus he lived many years. Some days before his death he sent for Saint Dubritius and his son Saint Cadoc, and by their assistance, and the holy rites of the church, prepared himself for his passage to eternity. He departed to our Lord towards the end of the fifth century, and was glorified by miracles. See his life in Capgrave and Henschenius, from the collection of John of Tinmouth.
- Father Alban Butler. “Saint Gundleus, Confessor”. , 1866. CatholicSaints.Info. 24 March 2013. Web. 27 February 2017. <>