"Many chosen youths of the family of Roderic (Rhodri) were seated on an opposite rock, and not one of them could be prevailed upon to take the cross, although the archbishop and others most earnestly exhorted them, but in vain, by an address particularly directed to them. It came to pass within three days, as if by divine vengeance, that these young men, with many others, pursued some robbers of that country. Being discomfited and put to flight, some were slain, others mortally wounded, and the survivors voluntarily assumed that cross they had before despised. Roderic, also, who a short time before had incestuously married the daughter of Rhys, related to him by blood in the third degree, in order, by the assistance of that prince, to be better able to defend himself against the sons of his brothers, whom he had disinherited, not paying attention to the wholesome admonitions of the archbishop on this subject, was a little while afterwards dispossessed of all his lands by their means; thus deservedly meeting with disappointment from the very source from which he expected support."
''The Historical Works of Giraldus Cambrensis; The Itinerary of Wales and the Description of Wales''
Translated by Sir Richard Colt-Hoare (1894), p.445