Family: Owain ap Gruffydd, King of Gwynedd / Gwladys ferch Llywarch (F5286)
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Male
Owain ap Gruffydd, King of Gwynedd
Birth Abt 1100 Yorkshire, England 
Death 23 Nov 1170 Yorkshire, England Burial Marriage Father Gruffydd Ap Cynan, King of Gwynedd | F4450 Group Sheet Mother Angharad Verch Owain | F4450 Group Sheet
Female
Gwladys ferch Llywarch
Birth 1098 Yorkshire, England Death 1155 Yorkshire, England Burial Father Llywarch ap Trahaearn | F5235 Group Sheet Mother Dyddgu ferch Iorwerth | F5235 Group Sheet
Male
+ Iorwerth ab Owain
Birth Abt 1130 Yorkshire, England Death 1174 Yorkshire, England Burial Spouse Margred ferch Madog | F5287 Marriage 1163 Yorkshire, England