Cormac Cruinn Ó Máille (died 1384) was an Irish noble. Ó Máille was a grandson of Eoghan mac Diarmait Ó Máille, a brother of Domnall Ruadh O Maille (died 1337). Cormac was a son of Domnall mac Eoghan, and had brothers Eoghan, Brian, Cormac Buadhach, Ruaibh. Though not a chief himself, Cormac was of the line that provided all subsequent Ó Máille Chiefs of the Name. The Annals of the Four Masters record that "A meeting took place between O'Flaherty and O'Malley, but a quarrel arose between them, in which Owen O'Malley, Cormac O'Malley (i.e., Cormac Cruinn) and many others besides these, were slain by the people of O'Flaherty." See also Maille mac Conall Domnall Ruadh O Maille Grace O'Malley Martin O'Malley References The History of Mayo, Hubert T. Knox, 1908, p. 389. Medieval Gaels from Ireland People from County Mayo 14th-century Irish people Irish lords 1384 deaths Year of birth unknown