Family History and Genealogy Resources by Surname

McDonnough Surname Origin

(Origin Gaelic) The son of Donnach, the same as Duncan, safe, able to defend.

Source: An Etymological Dictionary of Family and Christian Names With an Essay on their Derivation and Import; Arthur, William, M.A.; New York, NY: Sheldon, Blake, Bleeker & CO., 1857.

McDonnough  Surname Meaning and Family Facts

McDonnough Last Name Meaning
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