OG

Owain Gwynedd

d. 1170

Vitals

Died
1170

Family

Parents
GA
Gruffudd ap Cynan
d. 1137
AF
Angharad ferch Owain
d. 1162
Siblings
SF
Susanna ferch Gruffudd ap Cynan
Spouse
GF
Gwladus ferch Llywarch
Children
ID
Iorwerth Drwyndwn
d. 1174
Children
AF
Angharad ferch Owain Gwynedd

About

Owain Gwynedd ruled Gwynedd for thirty-three years, defied Henry the Second, and was the first Welsh ruler to style himself Prince of Wales; he died excommunicate for his marriage and was buried in Bangor cathedral by clergy who ignored the ban.

Research notes

✓ OWAIN GWYNEDD (c.1100-1170), King of GWYNEDD, first to be styled PRINCE OF WALES; father of Iorwerth Drwyndwn (our line; Iorwerth's mother Gwladus ferch Llywarch, note-only). 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. || SECOND ROAD OPENED 14 Sep 2026: his daughter ANGHARAD (F100304, mother unrecorded among his several consorts - stated plainly) married GRUFFYDD MAELOR of Powys, so Owain Gwynedd now stands on BOTH the Gwynedd road (via Iorwerth > Llywelyn the Great) and the new Powys Fadog road (via Angharad > Glyndwr's line). Wife GWLADUS added to F99946 as Iorwerth's mother.

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