All surnames

Irish surname

Duffy

Descendant of Dubhthach

Clan or community name

From Irish "dubh" (dark/black), describing hair or complexion.

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Frequently asked questions

What does the surname Duffy mean?

Descendant of Dubhthach. From Irish "dubh" (dark/black), describing hair or complexion.

Is Duffy a common surname?

Duffy is a Irish-origin surname. Popularity varies widely by country and region, and the same surname can be common in one place and rare in another.

Can two families with the same surname be unrelated?

Yes. Surnames, especially occupational and descriptive ones like this, were often adopted independently by many unrelated families who happened to share a trade, appearance, or location.

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