Nielsen Hayden genealogy
Family: Gruffydd ap Cynan ab Iago, King of Gwynedd / Angharad ferch Owain (F5548)
m. Abt 1095-
Father | Male
Gruffydd ap Cynan ab Iago, King of Gwynedd
Born Abt 1055 Died 1137 Buried Married Abt 1095 [1] Other Spouse (Unknown wife or mistress of Gruffudd ap Cynan) | F17608 Married Father Cynan ab Iago | F3447 Group Sheet Mother Radnailt of Dublin | F3447 Group Sheet
Mother | Female
Angharad ferch Owain
Born Died 1162 Buried Father Owain ab Edwin | F913 Group Sheet Mother
Child 1 | Male
+ Owain Gwynedd, King of Gwynedd
Born Died 1169 Buried Bangor Cathedral, Bangor, Gwynedd, Wales 
Spouse Gwladus ferch Llywarch | F1660 Married Spouse Cristin ferch Gronwy ab Owain ab Edwin | F15927 Married Spouse (Unknown mistress of Owain Gwynedd) | F17586 Married
Child 2 | Female
+ Susanna ferch Gruffydd ap Cynan
Born Died Buried Spouse Madog ap Maredudd, Prince of Powys Fadog | F4086 Married
Child 3 | Female
+ Gwenllian ferch Gruffudd
Born Died 1136 Buried Spouse Gruffydd ap Rhys | F15914 Married
Child 4 | Male
+ Cadwaladr ap Gruffudd ap Cynan, King in Wales
Born Died 1172 Buried Bangor Cathedral, Bangor, Gwynedd, Wales Spouse Aliz de Clara | F17642 Married Bef 1151
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Sources - [S903] The Dictionary of Welsh Biography. National Library of Wales, 2007 and ongoing.
- [S903] The Dictionary of Welsh Biography. National Library of Wales, 2007 and ongoing.