B. c.1160, eld. s. of Rhys ap Gruffydd and Gwenllian; acc. 1197; m. Matilda, da. of William de Braose III; issue: Rhys, Owain; d. 25 July 1201.
The position of Deheubarth built up by Rhys was partly personal and could not be sustained. His sons quarrelled incessantly. Gruffydd took cantref Mawr on his father's death. He had for years been at odds with his younger brother, Maelgwyn, who was strong in Ceredigion. Soon after his accession, Maelgwyn captured him and handed him over to Gwenwynwyn of Powys, who passed him on to the English. On his release, Gruffydd was gaining the upper hand when Maelgwyn came to terms with king John, who confirmed his control of Ceredigion in exchange for the key castle at Cardigan, captured by his father. After only four years, Gruffydd died of illness.
Subjects: British History.