Ó Cuileamhain
Ó CUILEAMHAIN—I—O Cullone, O Collone, Culloon, Culhoun, Colhoon, Colhoun, Cullen; 'descendant of Cuileamhan'; the name of a South Leinster family to which belonged, according to O'Curry, the late Cardinal Cullen.
Alphabetical Index to Irish Surnames