Surname Sewald (Sewald 
) , in the world, is quite a rare cognomen. The surname Sewald is habitual in Germany, where it is a rare surname, Austria, and Argentina. In absolute terms, it is the most numerous in Germany, the United States, and Brazil.
| VARIANT | COUNTRY |
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| Sewald | Brazil, Austria, United States, Argentina, Germany |
| günther sewald German politician (1905-1949), DE (b. 1905) |
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paul sewald American professional baseball pitcher, US (b. 1990) |
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| norbert sewald researcher, DE (b. 1961) |
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| lisa sewald researcher ORCID ID = 0000-0001-6644-6943 |
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| alisa sewald German association football player, DE (b. 1996) |
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