Cognomen Decoursey (Decoursey 
) , around the globe, is a rare family name. The cognomen Decoursey is characteristic of the United States, where it is a rare surname, Canada, and New Zealand, where it is a very rare surname. Much less frequently, Decoursey is the forename as well as the last name.
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| Decoursey | New Zealand, Canada, United Kingdom, United States |
| decoursey fales American manuscript collector, US (b. 1888) |
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pete decoursey American political journalist, US (b. 1961) |
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| james h. decoursey, jr. American politician (1932-2016), US (b. 1932) |
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| patricia decoursey American biologist, US (b. 1950) |
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| thomas e decoursey researcher |
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| robert decoursey college basketball player (1949–1950) Yale |
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| roberg decoursey college basketball player (1949–1949) Yale |
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| matthew decoursey researcher, ORCID id # 0000-0002-5250-306X |
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| jillian decoursey American mixed martial arts fighter, US (b. 1984) |
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| inger decoursey CA |
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| paul decoursey |
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