Gruffudd ap Cynan
d. 1137
Vitals
Family
About
Gruffudd ap Cynan, reared in Viking Dublin, won and lost and won Gwynedd again across sixty years, survived imprisonment in Chester, and died old and blind and victorious; his is the only medieval Welsh king's life written by a contemporary.
Research notes
✓ GRUFFUDD AP CYNAN (c.1055-1137), King of GWYNEDD; m. ANGHARAD ferch Owain; father of Owain Gwynedd (our line). Source: the standard Gwynedd royal genealogy (Bartrum/Dictionary of Welsh Biography), web-confirmed 6 Aug 2026; these are the documented medieval Welsh king-lists, generally accepted by historians; contested rungs note-only, not hardened. || DAUGHTER ADDED 14 Sep 2026: SUSANNA (F99947, named among his daughters in the Hanes per Lloyd vol.2 p.122n, read first-hand) married MADOG AP MAREDUDD King of Powys - so Gruffudd ap Cynan too now feeds both Gwynedd and Powys.