Ó Maoldoraidh
Ó MAOLDORAIDH—I—Muldarry, Mulderry, Meelderry; 'descendant of Maoldoraidh' (contentious chief); the name of a branch of the Cinel Conaill who in the 10th, 11th and 12th centuries were chiefs of Tirconnell; still extant, but very rare.
Alphabetical Index to Irish Surnames