Proto-Celtic *wernā

→ English Vernon (derived)

→ Breton gwern (inherited)

→ Welsh gwern (inherited)

→ Spanish Bernedo (derived)

→ Basque Bernedo (derived)

→ French vergne (derived)

→ Irish fearnóg (inherited)

→ Scottish Gaelic feàrna (inherited)

→ Manx farney (inherited)

→ Cornish gwern (inherited)

→ Latin Verona (derived)

→ Old Irish fern (inherited)