70%RatingSave Gender Masculine Usage Welsh Pronounced Pron. /ˈɛi̯.vjɔn/ [key·simplify] Meaning & History From an Old Welsh given name of unknown meaning, the source of the place name Eifionydd (also called Eifion) in northwestern Wales. This name was revived in the 19th century, probably via the place name. People think this name isRate·Details classic mature formal upper class natural wholesome strong refined strange complex serious Categories rare Welsh, uncertain etymology