Nielsen Hayden genealogy
Ancestors of Gwenllian ferch Richard ap Cadwaladr ap Gruffudd ap Cynan
┌── Gruffydd ap Cynan ab Iago, King of Gwynedd (Abt 1055 - 1137)(m. Abt 1095) =>
┌── Cadwaladr ap Gruffudd ap Cynan, King in Wales ( - 1172 bur.Bangor Cathedral, Bangor, Gwynedd,
│ Wales)(m. Bef 1151)
│ Wales)(m. Bef 1151)
│ └── Angharad ferch Owain ( - 1162)(m. Abt 1095) =>
│
┌── Richard ap Cadwaladr ap Gruffudd ap Cynan (Abt 1170 - ??)
│ └── Aliz de Clara (m. Bef 1151)
│