Eufydd fab Dôn


Eufydd fab Dôn is a minor figure in Welsh mythology, the son of the mother goddess Dôn and brother to the better-known figures of Gwydion, Amaethon, Gofannon and Arianrhod. He is generally believed to have derived from the Gaulish god Ogmios and is cognate to the Irish hero Oghma Grianainech.

Role in Welsh tradition

Eufydd appears in a number of Welsh texts, spelled variously as Euuyd, Eueyed, Euyd and Ieunydd. He appears twice in the Book of Taliesin; first in Prif Gyfarch Taliesin in which it is stated:
and then again in Marwnat Aeddon:
The implication is that Eufydd was remembered in Welsh tradition as a skilled magician, intimately associated with his more illustrious brothers Gwydion and Gofannon, and with his uncle Math fab Mathonwy.
Eufydd also appears in the genealogical tract Bonedd yr Arwyr in which he is listed among the children of Dôn.

Associations with Hefeydd Hen

It has been suggested that Eufydd can be identified with Hefeydd Hen, the father of Rhiannon who appears prominently in the first branch of the Mabinogi.