All around the world, Cosmus (Cosmus 
) is a rare largely masculine, but uncommonly female forename. The first name Cosmus is characteristic of Trinidad and Tobago, where it is quite a rare male name, South Africa, where it is a rare masculine name, and Nigeria, where it is a rare gender-neutral name. In absolute terms, this name is the most popular in Nigeria, South Africa, and Indonesia. Also, Cosmus is the last name as well as the forename.
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| Cosmus | Uganda, South Africa, Kenya, Germany, Nigeria |
| cosmus pacettus author (15th century) (b. 1401) |
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| cosmus arildssøn (b. 1550) |
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| cosmus von simmer German historian, PL (b. 1581) |
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| cosmus bornemann Danish judge (1637-1692), DK (b. 1637) |
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| cosmus conrad cuno DE (b. 1652) |
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cosmus bræstrup Danish politician, DK (b. 1789) |
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cosmus bornemann Danish judge (1806-1877) (b. 1806) |
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| cosmus freuler Swiss librarian, CH (b. 1780) |
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| cosmus blumer (b. 1792) |
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| cosmus schindler Swiss entrepreneur (1860-1950), CH (b. 1860) |
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| cosmus bræstrup Danish architect (1877-1944) (b. 1877) |
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| cosmus flam German writer (1899-1945), PL (b. 1899) |
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| cosmus senior Jewish official of the Roman Empire |
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| cosmus hohenwarth |
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| cosmus gall von gallenstein |
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