Last name Duffy (Duffy 
, دافي 
, דאפי 
) , in the entire world, is a common cognomen. The last name Duffy is habitual in Ireland, where it is a common surname, New Zealand, where it is quite a common surname, and Jersey (explore the name in all countries). Measured by absolute frequency, the name is most common in the United States, the United Kingdom, and Ireland. Much less frequently, Duffy is the forename as well as the last name.
| john duffy (1769-1827) (b. 1769) |
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edward duffy Irish Fenian (b. 1840) |
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michael duffy member of the Queensland Legislative Assembly, IE (b. 1848) |
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frank gavan duffy Australian judge, IE (b. 1852) |
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henry thomas duffy Canadian politician, CA (b. 1852) |
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| william duffy (1803-1836) (b. 1803) |
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miguel duffy AR (b. 1845) |
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| thomas duffy recipient of the Victoria Cross, IE (b. 1806) |
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| aurence duffy (1807-1870), CZ (b. 1807) |
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| james duffy Irish author and publisher (b. 1809) |
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patrick laurence duffy US (b. 1851) |
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paddy duffy Irish-American and the first World Welterweight champion, US (b. 1864) |
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bill duffy Sportsman (1866-1959), AU (b. 1866) |
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hugh duffy baseball player and manager, US (b. 1866) |
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james e. duffy American football player and lawyer (1867-1953), US (b. 1867) |
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