The surname Duffy originates from Ireland, derived from the Irish name Ó Dubhthaigh, which translates to "descendant of Dubthach." The name Dubthach itself is an Old Irish personal name meaning "black," indicating a possible connection to physical characteristics or symbolic meanings associated with the color black.
Ranked #892 nationally, Duffy was recorded about 38835 times in the Census. That means roughly 13 Americans out of every 100,000 share this name.
Our database contains over 16593 people with the last name Duffy. This surname is most commonly found in California, New York, Florida. We have over 16 unique first names combined with the last name Duffy in our records. The most frequent first names associated with this surname are John, Michael, James.
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