Family History and Genealogy Resources by Surname
Mulligan Surname Origin
(Origin Gaelic) Locality. Mullechean, the top or summit, a height.
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.
Mulligan Surname Meaning and Family Facts
There is more to Mulligan family history than the origin of your surname:
A Mulligan Family History Thought:
'Everyone has ancestors and it is only a question of going back far enough to find a good one.' --Howard Kenneth Nixon