Rhodri ab Owain Gwynedd
On the death of Owain Gwynedd in 1170, fighting broke out among his nineteen sons over the division of his kingdom. Rhodri and his brother Dafydd ab Owain Gwynedd, Owain's legitimate sons by his wife Cristina, defeated and killed their half brother Hywel ab Owain Gwynedd at Pentraeth that year. The other sons were largely killed or exiled between 1170 and 1174. Rhodri acquired part of Gwynedd, but soon afterwards came under pressure from his brother Dafydd who captured and imprisoned him.
In 1175, Rhodri escaped from captivity and was able to gain enough support to drive Dafydd out of the part of Gwynedd situated west of the River Conwy. Dafydd and Rhodri then agreed to the partition of Gwynedd between them, with Dafydd retaining only Gwynedd east of the Conwy and the island of Anglesey. Rhodri and his family are mentioned in Descriptio Cambriae by Gerald of Wales which was written in c.1188 and recounts his journey around Wales raising support for the Third Crusade. In this work Gerald appears to suggest that Rhodri had made his royal home on the island – probably at Aberffraw – and gives some illuminating details about Rhodri and his young family:
"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
By this time the young nephew of Rhodri and Dafydd, Llywelyn the Great had begun to put pressure on his uncles. Rhodri also came under pressure from his nephews Gruffydd and Maredydd ap Cynan, who drove him from Anglesey in 1190. Rhodri made an alliance with Ragnald, King of Mann and the Isles, and possibly married Ragnald's daughter. In 1193, with the help of a Manx contingent, he briefly regained Anglesey, but was ejected again the same year by Gruffydd and Maredudd. Rhodri had three known sons;
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