Last name Farnsworth (Farnsworth 
) , around the world, is a common cognomen. The last name Farnsworth is characteristic of the United States, where it is quite a rare surname, New Zealand, and Australia. Measured by absolute frequency, it is the most numerous in the United States, the United Kingdom, and Canada.
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| Farnsworth | Canada, New Zealand, Australia, United States, United Kingdom |
| mary farnsworth 30 Mar 1637 Dorchester, MA - (b. 1637) |
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| rebecca farnsworth 2 Jan 1639 - (b. 1639) |
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| amos farnsworth (27 Nov 1704 - certain 5 Dec 1775) (b. 1704) |
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| jonas farnsworth (1713 - 1803) (b. 1713) |
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| jonas farnsworth born 1744; died 1808 (b. 1744) |
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| jonas farnsworth (1748-1805) (b. 1748) |
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elon farnsworth American politician, US (b. 1799) |
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| amos farnsworth (28 Apr 1754 - certain 19 Oct 1847) (b. 1754) |
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hiram warner farnsworth American activist (1816-1899), US (b. 1816) |
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daniel duane tompkins farnsworth American politician (1819-1892), US (b. 1819) |
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| david farnsworth US (b. 1760) |
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john f. farnsworth Union Army General (1820-1897), US (b. 1820) |
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elon j. farnsworth Union Army General (1837-1863), US (b. 1837) |
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| amos farnsworth American physician (1788-1861), US (b. 1788) |
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| benjamin franklin farnsworth American Baptist minister and educator (1793-1851), US (b. 1793) |
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