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Meaning and Origin of: Kiernan

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First name origins & meanings:

  • Irish : Small and dark-skinned
  • Gaelic : Small and dark-skinned

First name variations

Last name origin & meaning:

  • Irish : reduced form of McKiernan, an Anglicized form of Gaelic Mac Thighearnáin ‘son of Tighearnan’ (see Tiernan).