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O'Riordan

Updated: May 26, 2021
Updated: May 26, 2021

Family name origins & meanings

  • 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.

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