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

Iorwerth Drwyndwn ap was born about 1140 in Aberffraw Castle, Anglsey, Wales.  Iorwerth Drwyndwn ap's father was Owain Fawr ap Gruffydd and his mother was Gwladys Verch Llywarche.  His paternal grandparents were Gruffydd ap Cynan and Angharad Verch Owain; his maternal grandparents were Llywarche ap Trahaern and Dyddgu verch Idnerth. He had five brothers and a sister, named Owain ap, Dafydd ap, Maelgwn ap, Rhodri ap, Cynan ap and Angarad verch. He had four half-brothers and four half-sisters, named Ievan Ap, Dafydd Ap, Madoc Ap, Riryd Ap, Margaret Verch, Gwenllian Verch, Angharad verch Owain and Gwenllian Verch.  He died about 1176 in Anglsy, Wales.


Iorwerth Drwyndwn ap's family with Marared Margaret of Powys-Vadoc

They had two sons named Llewelyn "The and Adda ap.

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