Cognomen Umlauf (Umlauf 
) , throughout the world, is quite a rare surname. The cognomen Umlauf is habitual in Czechia, where it is quite a rare surname, Germany, and Austria. Not in comparison with a country's population, it is the most numerous in Germany, the United States, and Czechia. Much less frequently, Umlauf is the forename as well as the last name.
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| Umlauf | Brazil, Czechia, United States, Germany, Poland |
| norbert umlauf (b. 1688) |
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| joseph umlauf organist (b. 1725) |
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| ignaz umlauf Austrian composer (1746-1796), AT (b. 1746) |
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ignác umlauf Austrian painter (1821-1851), CZ (b. 1821) |
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jan umlauf Czech photographer and painter (1825-1916), CZ (b. 1825) |
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| michael umlauf Austrian composer, AT (b. 1781) |
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| elisabeth umlauf Austrian singer, AT (b. 1786) |
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| dominik umlauf Czech painter and woodcarver (b. 1792) |
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| josef umlauf (1800-1869), CZ (b. 1800) |
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| františek x. umlauf Roman Catholic priest, theologian and journalist, CZ (b. 1820) |
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klara czop-umlauf Polish pianist, UA (b. 1875) |
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| karl j. f. umlauf Austrian musician and composer, AT (b. 1840) |
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charles umlauf American artist, US (b. 1911) |
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| karl a. umlauf German mathematician and educator, DE (b. 1866) |
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| hilda umlauf prisoner in Theresienstadt Ghetto, b. 1895-06-07 (b. 1895) |
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