Welsh ir

← Proto-Brythonic *ir (inherited)

← Proto-Celtic *sindos (inherited(cy/owl))

← Proto-Celtic *ɸūros (inherited)

← Welsh pur (doublet)

← Irish úr (cognate)

← Proto-Indo-European *puHrós (inherited)

← Proto-Indo-European *pewH- (derived)

← Cornish yr (cognate)

→ English Irving (cognate)

→ English Irvine (cognate)

→ Cimbrian böoban (cognate)

→ Welsh eilir (compound)

→ Cornish yr (cognate)