Ó Maoileanaigh
Ó MAOILEANAIGH—I—O Mullany, Mullany, Mullaney; 'descendant of Maolsheanaigh,' (servant of St. Seanach); a common surname in Connacht, especially in Roscommon (where in 1540 the family was seated in the neighbourhood of Loch Cé), Mayo and Sligo; also found in Cork and Antrim.
Alphabetical Index to Irish Surnames