 Gruffydd ap Rhydderch

Gruffydd ap Rhydderch (d. AD 1055) was a king of Gwent and part of the kingdom of Morgannwg in south Wales and later king of Deheubarth.Gruffydd was the son of Rhydderch ab Iestyn who had been able to take over the kingdom of Deheubarth from 1023 to 1033.