Family name Sidgwick (Sidgwick 
) , in the world, is a rare surname. The cognomen Sidgwick is habitual in the United Kingdom, where it is a rare surname, Sweden, and Belgium. In absolute terms, this name is the most popular in the United Kingdom, Australia, and Sweden.
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| Sidgwick | Belgium, Australia, Sweden, United Kingdom, United States |
| william sidgwick (1765-1827) (b. 1765) |
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henry sidgwick English philosopher, GB (b. 1838) |
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arthur sidgwick British teacher and lecturer (1840-1920), GB (b. 1840) |
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eleanor mildred sidgwick British mathematician & college principal (1845-1936), GB (b. 1845) |
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| william sidgwick Peerage person ID=706951 (b. 1806) |
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nevil vincent sidgwick English theoretical chemist, GB (b. 1873) |
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| robert hodson sidgwick (b. 1817) |
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ethel sidgwick British poet (1877-), GB (b. 1877) |
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rose sidgwick Sidgwick, Rose (1877–1918), university teacher, GB (b. 1877) |
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| william carr sidgwick lecturer at Merton College, Oxford, 1834-1919 October (b. 1834) |
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| alfred sidgwick British logician and philosopher, GB (b. 1850) |
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| robert sidgwick English county cricketer (1851-1934), GB (b. 1851) |
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| cecily ullmann sidgwick British fiction writer and novelist, GB (b. 1854) |
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| frank sidgwick British publisher; collector, editor, and writer of poetry (b. 1879) |
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| margaret sidgwick (1881-1948) (b. 1881) |
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