Gwynhoiarn
m.
Old Breton uuin, uuen, Middle Welsh guin, gwynn, guen 'sacred, pure, blessed; white' + Old Breton (ho)iarn 'iron'.
- France
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- Latin
- ● 833 Uuinhoiarn (nom) CartRed VIII
Cite as: S.L. Uckelman. "Gwynhoiarn". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2020, no. 1. http://dmnes.org/2020/1/name/Gwynhoiarn.