Born: 1223, Gwynedd, United Kingdom
Died: December 11, 1282 (age 59 years), Cilmery, United Kingdom
Children: Gwenllian of Wales
Grandchild: Eleanor verch Philip
Grandparents: Llywelyn ab Iorwerth, Caradog ap Thomas, and Efa ferch Gwyn
Spouse: Eleanor de Montfort (m. 1278)
Great grandchild: Elen ferch Thomas ap Llywelyn ab Owain ap Maredudd