Cognomen Jenness (Jenness 
, جينيس) , all over the world, is quite a rare last name. The family name Jenness is characteristic of the United States, where it is a rare surname, New Zealand, and Belgium. In absolute terms, it is the most numerous in the United States, the United Kingdom, and Canada. Much less frequently, Jenness is the forename as well as the last name.
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| Jenness | Australia, Mauritania, Canada, United States, United Kingdom |
| richard jenness (b. 1718) |
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willard woodman jenness politician in Massachusetts, US (1827-1877), US (b. 1827) |
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| john s. jenness American politician, US (b. 1811) |
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| john smith jenness American politician, US (b. 1813) |
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diamond jenness Canadian anthropologist, NZ (b. 1886) |
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| john scribner jenness (b. 1827) |
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| theodora r. jenness American author, missionary (1847-1935), US (b. 1847) |
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william whittem jenness politician in Massachusetts, US, US (b. 1904) |
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linda jenness American activist, US (b. 1941) |
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valerie jenness author, researcher, public policy advisor, and professor (b. 1963) |
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| stuart e. jenness Canadian geologist (b. 1925) |
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| robert jenness (b. 1917) |
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| james m. jenness American businessman (b. 1946) |
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mia sinclair jenness American actress (born 2005), US |
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| jeff jenness researcher, ORCID id # 0000-0002-9448-1444 |
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