Cognomen Geyler (Geyler 
, Гейлер 
) , worldwide, is a rare surname. The cognomen Geyler is characteristic of Nicaragua, where it is a rare surname, Germany, and Kazakhstan. Not in comparison with a country's population, it is commonest in Germany, Russia, and Mexico. Also, Geyler is the forename as well as the last name.
| johanna rosina geyler (b. 1785) |
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| hermann theodor geyler paleontologist, botanist (1835-1889), DE (b. 1835) |
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| friedrich geyler (b. 1879) |
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