Old Irish máel

← Proto-Celtic *mailos (inherited)

← Welsh moel (cognate)

→ English mad (cognate)

→ Breton moal (cognate)

→ Welsh moel (cognate)

→ Irish maol (inherited)

→ Irish Maoldúin (mention)

→ Scottish Gaelic maol (inherited)

→ Manx meayl (inherited)

→ Old Irish Máel (mention)

→ Old Irish Máel Dúin (compound)