Cognomen Senff (Senff 
) , throughout the world, is quite a rare last name. The cognomen Senff is habitual in Germany, where it is a rare surname, Netherlands, and Czechia. Not in comparison with a country's population, it is commonest in Germany, the United States, and Brazil.
| VARIANT | COUNTRY |
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| Senff | Netherlands, Canada, Brazil, United States, Germany |
| samuel senff (b. 1612) |
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| andreas senff (b. 1617) |
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| carl samuel senff DE (b. 1666) |
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karl august senff Baltic German painter (1770-1838), DE (b. 1770) |
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| adolf senff German painter (1785–1863), DE (b. 1785) |
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| karl friedrich senff DE (b. 1776) |
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charles h. senff American industrialist, US (b. 1837) |
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| emil senff politician (1807-1879), PL (b. 1807) |
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| karl julius senff DE (b. 1804) |
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| carl eduard senff SE (b. 1810) |
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| ludwig eduard senff (b. 1842) |
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| richard senff (b. 1858) |
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nida senff swimmer, NL (b. 1920) |
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| hilda senff DE (b. 1885) |
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| erich senff DE (b. 1897) |
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