Last name Friedlein (Friedlein 
) , worldwide, is quite a rare family name. The last name Friedlein is habitual in Western Europe, particularly Germany, where it is quite a rare surname, Switzerland, where it is a rare surname, and Austria. In absolute terms, it most frequently occurs in Germany, the United States, and the United Kingdom. Much less frequently, Friedlein is the forename as well as the last name.
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| Friedlein | Germany, United Kingdom, Switzerland, United States, Poland |
| jan jerzy fryderyk friedlein PL (b. 1771) |
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| karl wilhelm friedlein DE (b. 1772) |
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józef friedlein PL (b. 1831) |
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| daniel edward friedlein PL (b. 1802) |
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christine friedlein German opera singer, DE (b. 1862) |
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| august friedlein (b. 1808) |
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| rudolf fryderyk friedlein PL (b. 1811) |
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| gottfried friedlein German historian of mathematics (1828-1875), DE (b. 1828) |
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| arnold friedlein holocaust victim, b. 1867-09-11, DE (b. 1867) |
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| karoline friedlein holocaust victim, b. 1880-02-04, DE (b. 1880) |
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| curt friedlein DE (b. 1886) |
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| herbert friedlein German politician, DE (b. 1936) |
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| günter friedlein DE (b. 1939) |
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| roger friedlein DE (b. 1967) |
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| heinz-reiner friedlein Dr. rer. nat. Ruhr-Universität Bochum 1971 |
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