Cognomen Geigy (Geigy 
) , in the world, is a rare family name. The cognomen Geigy is characteristic of Switzerland, where it is quite a rare surname, Venezuela, where it is a very rare surname, and France, where it is an extremely rare surname. In absolute terms, it is the most numerous in Switzerland, India, and Venezuela. Likewise, Geigy is the forename as well as the last name.
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| Geigy | Switzerland, Philippines, United States, Venezuela, India |
| johann rudolf geigy (1733-1793), CH (b. 1733) |
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johann rudolf merian geigy Swiss politician (1830-1917), CH (b. 1830) |
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| hieronymus geigy (b. 1771) |
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| charlotte geigy (b. 1778) |
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| thomas geigy (b. 1783) |
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| carl geigy Swiss politician (1798-1861), CH (b. 1798) |
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| wilhelm geigy (b. 1800) |
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| eduard geigy (b. 1801) |
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| alfred geigy (1849-1915), CH (b. 1849) |
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rudolf geigy Swiss zoologist (1902-1995), CH (b. 1902) |
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| carl geigy Swiss philanthropist (1860-1943), CH (b. 1860) |
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| nicolas geigy researcher |
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| thomas geigy |
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