Career
He ruled from 1175 to 1195. The other sons were largely killed or exiled between 1170 and 1174. 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:
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;
Tomas, Lord of Rhiw Llwyd
Gruffudd
Einion
The descendants of Prince Tomas were claimed by Sir John Wynn as his ancestors (a claim he would later have proven in court) and by the Anwyl of Tywyn Family. Rhodri died in 1195.