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:
'I don't have to look up my family tree, because I know that I'm the sap.' --Fred Allen