Cognomen Mcduff (Mcduff 
) , all around the world, is quite a rare family name. The last name Mcduff is habitual in Canada, where it is quite a rare surname, New Zealand, and Australia, where it is a rare surname. Not in comparison with a country's population, this name is the most popular in the United States, Canada, and the United Kingdom. Very seldom, Mcduff is the forename as well as the last name.
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| Mcduff | Canada, New Zealand, Australia, United Kingdom, United States |
| daniel mcduff (b. 1757) |
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dusa mcduff mathematician, US (b. 1945) |
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| robert j. mcduff American lawyer (b. 1903) |
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| bettina mcduff (1909-1999) (b. 1909) |
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| jack mcduff American jazz organist and organ trio bandleader (1926-2001), US (b. 1926) |
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| david mcduff British translator, editor and literary critic (b. 1945) |
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| kenneth mcduff American criminal, US (b. 1946) |
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| phyllis mcduff (b. 1942) |
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caleb mcduff Profoundly deaf go-kart racer, GB |
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| david mcduff researcher (ORCID 0000-0003-4088-3920) |
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| pascal mcduff performing artist in Canada |
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| dawn rita mcduff Peerage person ID=288088 |
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| william mcduff Peerage person ID=288216 |
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| joan mcduff Peerage person ID=288157 |
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| esma mcduff Peerage person ID=288136 |
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