Rhys ap Tewdwr

Rhys ap Tewdwr (c. 1040 – 1093) was a king of Deheubarth in Wales and member of the Dinefwr dynasty, a branch descended from Rhodri the Great.

As a member of the House of Dinefwr, he claimed the throne of Deheubarth following the death of his second cousin Rhys ab Owain, who was beheaded after the battle of Gwdig (modern day Goodwick) against Caradog ap Gruffydd in 1078.

However, Rhys returned later the same year with a fleet from Ireland and defeated the men of Powys, in a battle in which two of Cadwgan's brothers, Madog and Rhiryd, were killed.

The Welsh Bruts (chronicles) state that "Rhys ap Tewdwr, king of Deheubarth, was slain by the Frenchmen who were inhabiting Brycheiniog."

This passage lends evidence to the belief that the conquest of Brycheiniog (Brecon), led by Bernard de Neufmarche, was mostly finished by Eastertide 1093.

The monastery and village of Penrhys in Rhondda Cynon Taff is said to be named for Rhys, as he was beheaded at the site by Norman forces.

Medieval Wales , showing Deheubarth in the southwest
Part of the Welsh version of Brut y Tywysogion found in the Red Book of Hergest