Last name Stefanowicz (Stefanowicz 
, Ștefanovici) , worldwide, is quite a rare family name. The surname Stefanowicz is characteristic of Poland, where it is quite a rare surname, Ireland, where it is a rare surname, and Australia. Measured by absolute frequency, the name is most common in Poland, the United States, and Germany. Likewise, Stefanowicz is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Stefanowicz | United Kingdom, Poland, Australia, United States, Germany |
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dominik stefanowicz Polish music educator, conductor, composer (b. 1797) |
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antoni stefanowicz Polish painter (1858-1929), FR (b. 1858) |
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| franciszek stefanowicz (b. 1801) |
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| katarzyna stefanowicz (b. 1815) |
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kajetan stefanowicz Polish landowner of Armenian origin, activist and politician in Bukovina, UA (b. 1877) |
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zygmunt józef stefanowicz Polish journalist, publicist, PL (b. 1884) |
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aleksander stefanowicz Lieutenant colonel of the Polish Army, CA (b. 1900) |
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| stefan stefanowicz UA (b. 1853) |
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| czesław stefanowicz (b. 1877) |
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| jan stefanowicz Polish architect (1892-1978), PL (b. 1892) |
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| adela stefanowicz PL (b. 1887) |
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| anna stefanowicz PL (b. 1912) |
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maurycy stefanowicz Polish musician, PL (b. 1976) |
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| janusz stefanowicz Polish historian, PL (b. 1932) |
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magdalena stefanowicz Polish sprinter, PL |
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