Meaning and Origin of: Riordan

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First name origins & meanings:

  • Gaelic : Poet

First name variations

Last name origin & meaning:

  • Irish : reduced form of O’Riordan, an Anglicized form of Gaelic Ó Ríoghbhárdáin ‘descendant of Rióghbhárdán’, a byname composed of the elements ríogh- ‘royal’ + a diminutive of bárd ‘bard’, ‘poet’.