Welsh gŵyr

← Breton goar (cognate)

← Proto-Brythonic *gwuɨr (inherited)

← Proto-Celtic *wēros (inherited)

← Proto-Celtic *wid-ṛ (inherited)

← Welsh diwyr (link)

← Cornish gor (cognate)

← Old Irish ·fitir (cognate)

← Middle Welsh gwyr (inherited)

→ English ferrule (cognate)

→ Welsh diwyr (prefix)

→ Welsh gwyro (affix)

→ Irish fiar (cognate)

→ Scottish Gaelic fiar (cognate)

→ Ancient Greek Ἶρις (cognate)

→ Ancient Greek ἶρις (cognate)