The surname Sweeney originates from Ireland and is rooted in the Gaelic language. It is derived from "Mac Suibhne," which translates to "son of Suibhne." The name Suibhne itself was initially a byname, signifying someone who is "pleasant" or "well-disposed." This surname is historically linked to Clan Sweeney, reflecting its deep cultural and linguistic heritage.
The U.S. Census places the last name Sweeney at rank #651, with about 52410 people sharing the name nationwide. That’s roughly 18 per 100,000 citizens.
Our database contains over 16421 people with the last name Sweeney. This surname is most commonly found in Florida, California, New Jersey. We have over 13 unique first names combined with the last name Sweeney in our records. The most frequent first names associated with this surname are James, Michael, John.
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