Born: Abt 956, Dynevor Castle, Llandilo, Carmarthenshire, Wales
Marriage Information:
Gwenllian married Elystan "Glodrydd" ap Cyhylyn, Tywysog Fferlis, son of Cyhylyn ab Ifor and Gwen ferch Gronwy. (Elystan "Glodrydd" ap Cyhylyn was born about 956 in Buillth, Breconshire, Wales and died in Cefndigoll, Wales.)