Family name Fotherby (Fotherby 
) , all over the world, is a rare surname. The cognomen Fotherby is habitual in the United Kingdom, where it is a rare surname, New Zealand, and Canada. Measured by absolute frequency, it is the most numerous in the United Kingdom, Canada, and the United States. Very seldom, Fotherby is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Fotherby | Australia, Canada, United Kingdom, United States, China |
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martin fotherby British bishop (b. 1560) |
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| charles fotherby English clergyman (b. 1549) |
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| robert fotherby English explorer and whaler (b. 1600) |
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| charles fotherby British Member of Parliament (1674-1720) (b. 1674) |
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| kenneth fotherby (b. 1927) |
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| elizabeth fotherby (died 1643) |
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| priscilla fotherby 1594 - 10 Nov 1661 |
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| charles fotherby Peerage person ID=399025 |
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| mary fotherby Peerage person ID=23084 |
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