Cognomen Clouston (Clouston 
) , throughout the world, is quite a rare last name. The cognomen Clouston is characteristic of Isle of Man, where it is quite a rare surname, New Zealand, and Canada, where it is a rare surname. In absolute terms, this name is the most popular in the United States, Canada, and the United Kingdom.
| VARIANT | COUNTRY |
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| Clouston | United Kingdom, Canada, Australia, New Zealand, United States |
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thomas clouston Scottish psychiatrist, GB (b. 1840) |
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edward clouston Canadian banker and baronet (1849-1912), CA (b. 1849) |
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| peter clouston Scottish insurance broker and philanthropist (b. 1807) |
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| james stewart clouston last chief factor of the Hudson's Bay Company (b. 1826) |
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| william alexander clouston British folklorist (b. 1843) |
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| r. s. clouston British painter and etcher (b. 1857) |
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a.e. clouston Royal Air Force officer, NZ (b. 1908) |
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| thomas e. clouston (b. 1848) |
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| joseph harvey clouston Australian politician, AU (b. 1870) |
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| j. storer clouston author and historian from Orkney, GB (b. 1870) |
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| david clouston Scottish agriculturalist, horticulturalist and author, GB (b. 1871) |
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| robert edmond clouston New Zealand specimen collector and conservationist, NZ (b. 1874) |
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| marjorie meredith clouston (b. 1882) |
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| james campbell clouston Canadian navy officer, CA (b. 1900) |
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| evelyn clouston New Zealand artist and designer (1907–1975), NZ (b. 1907) |
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