Family History and Genealogy Resources by Surname
O'Conor Surname OriginThe descendants of Conor or Concovar, an Irish chieftain, who died in the year 971. See Conor
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.
O'Conor Surname Meaning and Family Facts
There is more to O'Conor family history than the origin of your surname:
A O'Conor Family History Thought:
What is past is prologue.