Cornish from Welsh
"great, immense, wonderful"

Edern Origin and Meaning

The name Edern is boy's name meaning "great, immense, wonderful".
The meaning of Edern is disputed, with some saying it comes from the Latin name Aeturnus, meaning "eternal" or "immortal." The more plausible etymology is that Edern derives from the Welsh edyrn, meaning "great," "immense," or "wonderful."

Edern is a character in Welsh mythology, the son of Nudd and a lover of Guinevere. He is often referred to as St. Edern.