Erbin of Dumnonia

Erbin of Dumnonia (c. 427 – c. 480) was a 5th-century King of Dumnonia (now Cornwall and Devon) and saint of Wales.

Traditionally, Erbin was a King of Dumnonia, the son of Constantine Corneu and the father of Geraint. He chiefly appears in Geraint and Enid, one of the Three Welsh Romances of the Mabinogion.

Erbin appears as a saint in the Bonedd y Saint and is traditionally associated with in Denbighshire. His feast day is 13 January. Gilbert Hunter Doble suggested he might be the same as Saint Ervan/Erme of Cornwall.