Welsh gwiwer

← Breton gwiñver (cognate)

← Proto-Brythonic *gwɨwer (inherited)

← Proto-Celtic *wiweros (inherited)

← Proto-Indo-European *wer- (inherited)

← Cornish gwiwer (cognate)

→ Breton gwiñver (cognate)

→ Welsh gwiwerod (affix)

→ Irish iora (cognate)

→ Scottish Gaelic feòrag (cognate)

→ Latvian vāvere (cognate)