Breton levr

← Proto-Brythonic *llɨvr (inherited)

← Welsh llyfr (cognate)

← Irish - (cognate)

← Scottish Gaelic leabhar (cognate)

← Manx lioar (cognate)

← Cornish lyver (cognate)

← Latin liber (derived)

← Old Breton libr (inherited)

→ Breton dornlevr (affix)

→ Cornish lyver (cognate)