Shortly before the birth of his son David, Xantus, Prince of Cereticu, the present Cardiganshire, had a most wonderful dream. An angel announced to him that the son would be a great saint. In confirmation thereof, said the angel, Xantus would see, upon waking, a honeycomb, a fish, and a stag. The honeycomb signified that the boy would have the gift of sweet, persuasive speech; the fish, that he would live the life of an ascetic; the stag, that he would be strong to overthrow the powers of evil. As the angel prophesied, so did it happen. Xantus saw the honeycomb, the fish, and the stag. He believed that the child was destined, as the angel said, to be a great saint and sent him to be educated at the abbey school at Menevia. For many years after leaving the monastery David lived a life of meditation on the Isle of Wight, seeing no one, and living on bread, water and leeks. He emerged at last from his seclusion and travelled over the country preaching and teaching. When the Archbishopric of Caerleon fell vacant he was preferred to that See, and removed it to Menevia, where he died, full of years and good works, in the year 544.