Nielsen Hayden genealogy
Iago ab Idwal, King of Gwynedd

( = Descendancy chart to this point,
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- 1 Iago ab Idwal, King of Gwynedd [1] d. 1039
- 2 Cynan ab Iago [1.1]
Radnailt of Dublin
- 3 Gruffydd ap Cynan ab Iago, King of Gwynedd [1.1.1]
b. Abt 1055 d. 1137
(Unknown wife or mistress of Gruffudd ap Cynan)
- 4 Gwenllian ferch Gruffudd [1.1.1.1]
[ =>]
- 4 Gwenllian ferch Gruffudd [1.1.1.1]
Angharad ferch Owain d. 1162
- 4 Owain Gwynedd, King of Gwynedd [1.1.1.2]
d. 1169 [ =>]
- 4 Susanna ferch Gruffydd ap Cynan [1.1.1.3]
[ =>]
- 4 Gwenllian ferch Gruffudd [1.1.1.4]
d. 1136 [ =>]
- 4 Cadwaladr ap Gruffudd ap Cynan, King in Wales [1.1.1.5]
d. 1172 [ =>]
- 4 Owain Gwynedd, King of Gwynedd [1.1.1.2]
- 3 Gruffydd ap Cynan ab Iago, King of Gwynedd [1.1.1]
- 2 Cynan ab Iago [1.1]