Last name Grzywacz (Grzywacz 
) , in the entire world, is quite a common cognomen. The family name Grzywacz is habitual in Poland, where it is quite a common surname, Austria, where it is a rare surname, and Ireland. Not in comparison with a country's population, it is the most numerous in Poland, the United States, and France. More frequently, Grzywacz is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Grzywacz | Germany, United Kingdom, United States, Poland, France |
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szlama grzywacz Polish resistance fighter, PL (b. 1910) |
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| jan grzywacz PL (b. 1896) |
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marta grzywacz Polish journalist, PL (b. 1971) |
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| wiktoria grzywacz PL (b. 1915) |
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maciek grzywacz PL (b. 1969) |
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| irena grzywacz PL (b. 1920) |
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| jerzy grzywacz (b. 1923) |
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| waldemar grzywacz PL (b. 1932) |
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| andrzej grzywacz researcher, PL (b. 1943) |
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| janusz grzywacz pianist, composer, PL (b. 1947) |
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| franciszek grzywacz (b. 1949) |
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| marek grzywacz Polish association football player, PL (b. 1965) |
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| małgorzata grzywacz PL (b. 1962) |
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| anna grzywacz researcher ORCID ID = 0000-0002-2633-520X (b. 1977) |
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| anna grzywacz Polish political scientist, PL |
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