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Female Gwenllian verch Owain I Click to view Gwenllian verch Owain I in the family tree

Gwenllian was born about 1124 in Caernarvonshire, Wales.  Gwenllian's father was Prince Owain ("Gwynedd") ap Gruffydd of North Wales and her mother is Gladys verch Llywarch.  Her paternal grandparents were King Gruffydd ap Cynan of Gwynedd and Angharad verch Owain; her maternal grandfather was Llywarch ap Trahaearn and her maternal grandmother is Dyddgu verch Iorwerth. She had a brother named "Drwyndwn".  She is the older of the two children. She has two half-sisters named Gwenllian and Angharad.


Gwenllian's family with Owain Cyfeiliog ("Cyfeiliog") ap Gruffudd

They had a son and a daughter, named Gwenwynwn and Gwerful.

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