Last name Sydnor (Sydnor 
) , across the world, is quite a rare family name. The last name Sydnor is characteristic of the United States, where it is a rare surname, New Zealand, and Canada, where it is a very rare surname. Very seldom, Sydnor is the forename as well as the last name.
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| Sydnor | Canada, Philippines, France, New Zealand, United States |
| charles sackett sydnor American historian (b. 1898) |
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| douglas sydnor American baseball player (1919-1969), US (b. 1919) |
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| buck sydnor Professional basketball player, US (b. 1921) |
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charles e. sydnor iii Maryland politician, US (b. 1974) |
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| willie sydnor American-football player, US (b. 1959) |
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| richard sydnor Archdeacon of Totnes |
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| valerie sydnor researcher |
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| justin reuel sydnor Ph.D. University of California, Berkeley 2006 |
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| floyd wills sydnor genealogist |
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| nigel sydnor college basketball player (2013–2014) NJIT |
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| charles w. sydnor American historian |
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