Gruffydd's father had been dispossessed as ruler of southern Powys by Llywelyn ab Iorwerth, who ruled until his death in 1240. Gruffydd, who had been brought up in England, was then reinstated with English support, but Llywelyn's grandson, Llywelyn ap Gruffydd, drove him out again in 1257. In 1263, when England was convulsed by civil strife, Gruffydd threw in his lot with Llywelyn, did homage and was restored to part of his lands. The understanding lasted until 1274 when he quarrelled with Llywelyn, was once more driven out, and again restored in 1277 with English help. The death of Llywelyn and his brother Dafydd in 1282 and 1283 enabled Gruffydd to retain his kingdom until his death. His granddaughter Hawise married in 1309 John, first Lord Charlton (or Cherleton) of Powys, who took possession of the lordship of Powys, despite protests from his wife's uncles.
From The Kings and Queens of Britain in Oxford Reference.
Subjects: British History.