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Male Iorwerth Drwyndwn ap Owain Gwynedd Click to view Iorwerth Drwyndwn ap Owain Gwynedd in the family tree

Iorwerth Drwyndwn ap Owain was born before 1169 in Aberffraw Castle3, Aberffraw, Anglesey, Wales.  Iorwerth Drwyndwn ap Owain's father was Owain Fawr Gwynedd ap Gruffydd and his mother is Gwladys verch Llywarch.  His paternal grandparents were Gruffydd ap Cynan and Angharad verch Owain of Tegaingl; his maternal grandfather was Llywarch ap Trahaern and his maternal grandmother is Dyddgu verch Iorwerth. He had four brothers named Maelgwin ap Owain, Dafydd ap Owain, Cynan ap Owain and Rhodri ap Owain. He had two half-brothers and three half-sisters, named Dafydd ap Owain, Ievan ap Owain, Gwenllian verch Owain, Angharad verch Owain and Marared verch Owain.  He died in 1174 in Pennant Mehangell.


Iorwerth Drwyndwn ap Owain's family with Marared verch Madoc of Powys

They had a son and a daughter, named Llywelyn Fawr the Great ap Iowerth of and Adda ap Iorwerth.

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