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Male Iorworth Dywyndwn Ap Owain Gwynedd Click to view Iorworth Dywyndwn Ap Owain Gwynedd in the family tree

Iorworth Dywyndwn Ap Owain was born in 1136 in Aberffraw Castle, Anglesey, North Wales.  Iorworth Dywyndwn Ap Owain's father was Owain Gwynedd ap Gruffydd Prince of Gwynedd and his mother was Gwladus Verch Llywarch.  His paternal grandparents were Gruffydd ap Cynan Prince of Gwynedd and Angharad Verch Owain; his maternal grandparents were Lord Llywarch ap Trahaern dePembroke and Dyddgu Verch Iorwerth.  He was an only child.  He died at the age of 38 in 1174 in Pennant Mehangell.



Iorworth Dywyndwn Ap Owain's family with Margred Verch Madog

They had a son named The Great.

Source/Citation
Pedigrees of Anglesey and Caernarvonshire Families @ 393

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