Cognomen Kolthoff (Kolthoff 
) , in the entire world, is a rare last name. The surname Kolthoff is habitual in Denmark, where it is quite a rare surname, Sweden, where it is a rare surname, and Netherlands. In absolute terms, it most frequently occurs in Germany, the United States, and Sweden.
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| Kolthoff | Germany, Sweden, United States, Denmark, Netherlands |
| herman kolthoff (b. 1540) |
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| henrik kolthoff 1653 - 1731 (b. 1653) |
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| johanna kolthoff (1705-1745), SE (b. 1705) |
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| sven kolthoff Swedish cartographer, SE (b. 1789) |
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gustaf kolthoff Swedish ornithologist and writer, SE (b. 1845) |
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| ernst kolthoff (b. 1809) |
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kjell kolthoff SE (b. 1871) |
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signe kolthoff Swedish actress (1881-1961), SE (b. 1881) |
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mark kolthoff Dutch artist (1901-1993), NL (b. 1901) |
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| elin kolthoff (b. 1859) |
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kees kolthoff Dutch politician, NL (b. 1936) |
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| i. m. kolthoff Dutch chemist (1894-1993), US (b. 1894) |
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| sonja kolthoff Swedish actress, SE (b. 1923) |
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| gerard kolthoff Dutch politician (1925-2010), NL (b. 1925) |
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| erick kolthoff Justice of the Supreme Court of Puerto Rico, US (b. 1961) |
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