O'Callaghan Surnames Genealogy


Sites in which the primary focus is the etymology of the surname and its variants, a one-name study or organization, relevant genealogy, or an associated family history.








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O'Callaghan

  • O'Callaghan - Family database as compiled by Eamonn O'Callaghan.
  • O'Callaghan-O'Brien Ancestors - Family database as compiled by James B O\\'Callaghan surnames from Bethel, o CT USA.
  • O'Callaghan Family - Researching the lineage of Laguna Beach, CA USA; o\'callaghan compiled by surnames Irene O'Callaghan.


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