Welsh iâr

← Breton yar (cognate)

← Proto-Celtic *yarā (inherited)

← Irish eireog (cognate)

← Cornish - (cognate)

← Middle Irish eirín (cognate)

← Old Welsh iar (inherited)

→ Breton yar (cognate)

→ Welsh cwtiar (mention)

→ Welsh iâr faes (compound)

→ Cornish yar (cognate)