Surname Cantwell (Cantwell 
) , in all the world, is a common family name. The last name Cantwell is habitual in Ireland, where it is quite a common surname, Australia, where it is quite a rare surname, and New Zealand. Not in comparison with a country's population, it is commonest in the United States, the United Kingdom, and Ireland.
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| Cantwell | United Kingdom, Australia, Ireland, United States, Canada |
| andrew cantwell Medical doctor and writer, FR (b. 1705) |
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| andré-samuel-michel cantwell French translator, FR (b. 1744) |
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| nancy ann williams cantwell (b. 1779) |
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| john cantwell Roman Catholic bishop (b. 1792) |
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| robert cantwell British architect, GB (b. 1793) |
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| john cantwell (b. 1792) |
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| william cantwell Canadian politician, CA (b. 1804) |
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| james sherlock cantwell (b. 1813) |
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john joseph cantwell American Catholic prelate, US (b. 1874) |
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| michael j. cantwell American politician, US (b. 1837) |
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mike cantwell American baseball player, US (b. 1894) |
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| edward lennon cantwell IN (b. 1835) |
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ben cantwell American baseball player (1902-1962), US (b. 1902) |
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michael herbert cantwell politician in Massachusetts, US, US (b. 1905) |
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robert cantwell Novelist, journalist, biographer, critic, US (b. 1908) |
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