Family History and Genealogy Resources by Surname
Sweeney Surname Origin
(Origin Irish) shortened form of McSweeney, an Anglicized form of Gaelic Mac Suibhne ‘son of Suibhne’, a byname meaning ‘pleasant’.
Sweeney Surname Meaning and Family Facts
There is more to Sweeney family history than the origin of your surname:
A Sweeney Family History Thought:
'There is no king who has not had a slave among his ancestors, and no slave who has not had a king among his.' --Helen Keller