Family History and Genealogy Resources by Surname
O'Dougherty Surname Origin
The chief of the oak habitation, from O, high or chief, doire or darach, the place of oaks, and tigh, a habitation.
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'Dougherty Surname Meaning and Family Facts
There is more to O'Dougherty family history than the origin of your surname:
A O'Dougherty Family History Thought:
'The past isn't dead. It isn't even past.' --William Faulkner