Irish dorn

← Proto-Celtic *durnos (inherited)

← Welsh dwrn (cognate)

← Old Irish dorn (inherited)

→ English Dornan (mention)

→ English McDorman (mention)

→ Breton dorn (cognate)

→ Irish dornáil (suffix)

→ Galician dorna (cognate)

→ Cornish dorn (cognate)