Cognomen Kieffer (Kieffer 
, كيفر 
, Киффер) , around the globe, is a common family name. The family name Kieffer is characteristic of Luxembourg, where it is a common surname, France, where it is quite a common surname, and Cyprus, where it is quite a rare surname. In absolute terms, it is the most numerous in France, the United States, and Germany. Much less frequently, Kieffer is the forename as well as the last name.
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| Kieffer | Germany, Luxembourg, France, United States, Argentina |
| كيفر | Iraq, Iran |
| anna barbara kieffer 25 Mar 1688 - 25 Mar 1735 Bischweiler (b. 1688) |
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jean-daniel kieffer French orientalist and linguist (1767-1833), FR (b. 1767) |
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fritz kieffer French poet (1854-1933), FR (b. 1854) |
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| johann jakob kieffer German artist, 1814-1891, DE (b. 1814) |
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| frédéric kieffer botanist (1827-1927) (b. 1827) |
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| franz xaver kieffer (b. 1820) |
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philippe kieffer French naval officer (1899-1962), FR (b. 1899) |
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| henry martyn kieffer (b. 1845) |
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| jean-jacques kieffer French naturalist and entomologist (1857-1925), FR (b. 1857) |
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evelyn p. kieffer chemist at Hercules Powder Company (1916-2018), US (b. 1916) |
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| georg kieffer birthdate: 1867 deathdate: 1937 viaf: 211669074 alias: Kieffer, G.; Kieffer, Georges (b. 1867) |
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| emil kieffer DE (b. 1860) |
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| william h. kieffer American politician – Minnesota -House 1931-32 (District 41); House 1935-38 (District 41), US (b. 1874) |
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| françois joseph kieffer (b. 1864) |
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| rené kieffer French publisher, bookbinder and bookseller, FR (b. 1876) |
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