Rhys ap Gruffydd (1132 – 28 April 1197) was the ruler of the kingdom of Deheubarth in south Wales. Rhys was one of the most successful and powerful Welsh princes, and after the death of Owain Gwynedd of Gwynedd in 1170 was the dominant power in Wales. Rhys became ruler of Deheubarth in 1155. He was forced to submit to King Henry II of England in 1158. Henry invaded Deheubarth in 1163, stripped Rhys of all his lands and took him prisoner. A few weeks later he was released and given back a small part of his holdings. Rhys made an alliance with Owain Gwynedd and after the failure of another invasion of Wales by Henry in 1165 was able to win back most of his lands. In 1171 Rhys made peace with King Henry and was confirmed in possession of his recent conquests as well as being named Justiciar of South Wales. He maintained good relations with King Henry until the latter's death in 1189. Following Henry's death Rhys revolted against Richard I and attacked the Norman lordships surrounding his territory, capturing a number of castles. In his later years Rhys had trouble keeping control of his sons, particularly Maelgwn and Gruffydd, who maintained a feud with each other. Rhys launched his last campaign against the Normans in 1196 and captured a number of castles. The following year he died unexpectedly and was buried in St David's Cathedral. (Full article...)