Cognomen Seyfart (Seyfart 
) , in the entire world, is a very rare last name. The surname Seyfart is habitual in Bulgaria, where it is a rare surname, Germany, where it is a very rare surname, and Canada, where it is an extremely rare surname. Not in comparison with a country's population, it is commonest in Germany, Bulgaria, and Brazil.
| andreas seyfart DE (b. 1616) |
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| johann friedrich seyfart German non-fiction writer and writer (1727-1786), DE (b. 1727) |
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| justus seyfart DE (b. 1799) |
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