Cognomen Mccosh (Mccosh 
) , worldwide, is quite a rare last name. The family name Mccosh is habitual in Australia, where it is a rare surname, New Zealand, and the United Kingdom. Not in comparison with a country's population, the name is most common in the United States, the United Kingdom, and Australia.
| VARIANT | COUNTRY |
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| Mccosh | Australia, Canada, New Zealand, United Kingdom, United States |
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james mccosh British philosopher (1811-1894), GB (b. 1811) |
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| john mccosh Scottish army surgeon and photographer, GB (b. 1805) |
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| david s. mccosh US (b. 1847) |
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| a. j. mccosh American-football player (1858-1908), GB (b. 1858) |
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| andrew k. mccosh industry administrator (b. 1880) |
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| david mccosh painter (b. 1903) |
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| james reid mccosh (1916-1942) (b. 1916) |
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| mary mccosh (1934-2016) (b. 1934) |
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| eric mccosh Hong Kong field hockey player, CN (b. 1938) |
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| edward hasell mccosh GB (b. 1949) |
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| shawn mccosh Canadian ice hockey player, CA (b. 1969) |
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| shayne mccosh ice hockey player, CA (b. 1974) |
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| richard b mccosh researcher |
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| geraldine agnes dunlop mccosh Peerage person ID=706195 |
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| thomas mccosh Peerage person ID=494409 |
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