Iorwerth ap Bleddyn

Iorwerth was the son of Bleddyn ap Cynfyn who was king of both Powys and Gwynedd.

Iorwerth, Cadwgan and Maredudd held their lands as vassals of Robert of Bellême, 3rd Earl of Shrewsbury.

William succeeded in this, and Iorwerth led a large Welsh force to ravage Shropshire on behalf of the king.

Many of the lands which he had been promised were given to others, and in 1103 Iorwerth was arraigned before a royal tribunal at Shrewsbury, convicted and imprisoned.

However, in 1111 Owain's ally, Madog ap Rhiryd, attacked Iorwerth at a house in which he was staying in the commote of Caereinion.