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Prince of Gwynedd
Reign 1195-1240
Predecessor Dafydd ab Owain Gwynedd
Successor Dafydd ap Llywelyn
Prince of Powys Wenwynwyn
Reign 1216-1240
Predecessor Gwenwynwyn ab Owain
Successor Gruffydd ap Gwenwynwyn
Born c.?1173
Dolwyddelan
Died 11 April 1240
Cistercian, Aberconwy Abbey, Wales
Burial Aberconwy Abbey, Wales
Spouse Joan, Lady of Wales
Issue Dafydd ap Llywelyn
Gruffydd ap Llywelyn
Elen ferch Llywelyn
Gwladus Ddu
Marared ferch Llywelyn
Gwenllian ferch Llywelyn
Angharad ferch Llywelyn
Susanna ferch Llywelyn
Full name
Llywelyn ap Iorwerth
Welsh Llywelyn Fawr
House Aberffraw
Father Iorwerth Drwyndwn
Mother Marared ferch Madog
1173 - 1240 (67 years)