O'riordan Family History
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O'riordan Name Meaning
Irish: Anglicized form of Gaelic Ó Ríoghbhárdáin ‘descendant of Ríoghbhárdán’ (see Riordan). This family is probably descended from Ríoghbhardán Ó Cearbhaill, who fell in battle in 1058.
Source: Dictionary of American Family Names ©2013, Oxford University Press
Similar surnames: Riordan, O'gorman, Lordan, O'regan, O'ryan, Corcoran, Gordon, Prior