Scottish Gaelic iolair

← Breton erer (cognate)

← Proto-Celtic *eriros (inherited)

← Welsh eryr (cognate)

← Irish iolar (cognate)

← Proto-Indo-European *h₃érō (inherited)

← Middle Irish ilar (inherited)

← Old Irish *irar (inherited)

→ Irish iolar (cognate)

→ Scottish Gaelic iolair-bhuidhe (affix)

→ Manx urley (cognate)