Cognomen Tröster (Tröster 
) , across the world, is quite a rare surname. The surname Tröster is characteristic of Germany, where it is quite a rare surname, Austria, where it is a rare surname, and Denmark. In absolute terms, the name is most common in Germany, Austria, and Spain.
| VARIANT | COUNTRY |
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| Tröster | Austria, Germany, Spain, Denmark, United States |
| johannes tröster German theologian, DE (b. 1500) |
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johannes tröster RO (b. 1700) |
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| ernst friedrich wilhelm tröster (b. 1742) |
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| františek tröster Czech scenographer and university educator (1904-1968), CZ (b. 1904) |
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| wolfgang tröster DE (b. 1925) |
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| petr tröster CZ (b. 1939) |
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| gerhard tröster researcher (b. 1953) |
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| michael tröster German musician, DE (b. 1956) |
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| jürgen tröster DE (b. 1954) |
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| achim tröster DE (b. 1959) |
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| bernhard tröster researcher |
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| tilman tröster researcher |
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| alexander i tröster researcher |
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| andreas tröster Dr. rer. nat. Universität Wien 1999 |
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| mark tröster researcher |
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Kai, Erna, Hans, Marie, Marco, Sarah, Silke, Simon, Sirka, Sonja, Alban, Anton, Armin, Adolf, Agnes, Bernd, Beate, Brian, Klaus, Petra, Peter, Roman, Erik, Eric, Elke, Elli, Jan, Tom, Tim, Udo, Mark, Maja, Mike, Swen, Anja, Karl, Dario, Kurt, Ralf, Rolf, Dirk, Lara, Leon, Lisa, Lutz, Theo, Nils, Nina, Paul, and Doris