Surname Northup (Northup 
) , all over the world, is quite a rare last name. The surname Northup is habitual in the United States, where it is a rare surname, Canada, and New Zealand. Measured by absolute frequency, it is commonest in the United States, Canada, and Brazil.
| VARIANT | COUNTRY |
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| Northup | Canada, Brazil, United States, New Zealand, United Kingdom |
| stephen northup Early Rhode Island settler, VC (b. 1630) |
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solomon northup free-born African American kidnapped by slave-traders, US (b. 1808) |
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jeremiah northup Canadian politician, CA (b. 1816) |
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james m. northup American politician in New York (1820-1899), US (b. 1820) |
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| henry bliss northup (b. 1805) |
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| samuel w. northup (b. 1841) |
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| willard c. northup American architect (b. 1882) |
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| george tyler northup (b. 1874) |
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| amos northup American automobile designer, US (b. 1889) |
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harry northup American actor and poet, US (b. 1940) |
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anne northup American politician in Kentucky (born 1948), US (b. 1948) |
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nancy northup American activist, US (b. 1960) |
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fred northup, jr. American comedian, US (b. 1973) |
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tracy northup physicist, US (b. 1978) |
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| lesley armstrong northup (b. 1947) |
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