Proto-Celtic *wastos

→ English vassal (derived)

→ English Gervase (derived)

→ Breton gwaz (inherited)

→ Welsh gwas (inherited)

→ French vassal (derived)

→ Italian vasso (derived)

→ Latin valet (derived(la/en))

→ Latin valet (derived(la/fr))

→ Latin vassallus (derived)

→ Polish walet (derived)

→ Cumbric gos (inherited)