Cognomen Fortner (Fortner 
) , in the entire world, is a common family name. The cognomen Fortner is habitual in the United States, where it is quite a rare surname, Brazil, and Canada, where it is a rare surname. In absolute terms, the name is most common in the United States, Brazil, and Germany.
| VARIANT | COUNTRY |
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| Fortner | Brazil, United States, Austria, Canada, Germany |
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franz xaver fortner (b. 1798) |
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ondřej fortner Czech painter and lithographer (1809-1862), CZ (b. 1809) |
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| ludwig fortner (1797-1872), AT (b. 1797) |
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| georg fortner German painter, 1814-1879, DE (b. 1814) |
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| johann fortner German general, DE (b. 1884) |
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| erich fortner AT (b. 1879) |
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| josef fortner German veterinarian and hygienist (b. 1893) |
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| wolfgang fortner German composer and conductor, DE (b. 1907) |
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| ethel fortner American writer, US (b. 1907) |
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nell fortner American basketball player-coach, US (b. 1959) |
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| jack fortner composer (b. 1935) |
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| ron fortner American journalist (1941-2003), US (b. 1941) |
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luke fortner American football player, US (b. 1998) |
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| robert s. fortner (b. 1948) |
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| mike fortner American politician, US (b. 1958) |
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