Family name Isner (Isner 
) , worldwide, is quite a rare cognomen. The surname Isner is habitual in Switzerland, where it is a rare surname, the United States, and France. Much less frequently, Isner is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Isner | Germany, Switzerland, United States, Canada, France |
| jan isner PL (b. 1345) |
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| benno isner holocaust victim, b. 1869-05-17, DE (b. 1869) |
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| sallie isner holocaust victim, b. 1874-11-09, DE (b. 1874) |
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| stephan isner Holocaust victim, b. 1901-09-12, CZ (b. 1901) |
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john isner American tennis player, US (b. 1985) |
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| jeffrey michael isner (1947-2001) (b. 1947) |
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| jeffrey m. isner (b. 1947) |
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| jean-charles isner researcher |
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| jordan isner brother of John Isner |
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| karen isner mother of John Isner |
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| robert isner father of John Isner |
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| nathan isner brother of John Isner |
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| nicolas isner |
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| oswald isner CH |
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