Nielsen Hayden genealogy
Family: Iorwerth Drwyndwn ap Owain Gwynedd / Margred ferch Madog (F993)
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Owain Gwynedd, King of Gwynedd ( -1169) |
Gwenllian ferch Madog ( -1160) |
Iorwerth Drwyndwn ap Owain Gwynedd ( -1174) |
Llywelyn Fawr ap Iorwerth (1173-1240) |