Cognomen Ingwersen (Ingwersen 
) , in the world, is quite a rare surname. The surname Ingwersen is characteristic of Denmark, where it is quite a rare surname, Germany, and Norway. In absolute terms, it is commonest in Germany, the United States, and Australia.
| VARIANT | COUNTRY |
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| Ingwersen | Australia, Netherlands, Germany, Denmark, United States |
| peter ingwersen (b. 1819) |
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arnold ingwersen Dutch architect (1882-1959), NL (b. 1882) |
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| jens ingwersen Danish architect (1871-1956) (b. 1871) |
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wout ingwersen Dutch architect, NL (b. 1926) |
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| peter ingwersen German writer (1885-1958), DE (b. 1885) |
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| walter edward theodore ingwersen botanist (1885-1960) (b. 1885) |
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| katharine ingwersen (b. 1879) |
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peter ingwersen Danish information scientist (*1947) (b. 1947) |
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henry ingwersen American state politician in Maine, US (b. 1951) |
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| will ingwersen British gardener (1905-1990) (b. 1905) |
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| hans ingwersen German politician (1914-1992), DE (b. 1914) |
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| peter ingwersen (1920-2004) (b. 1920) |
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| ben ingwersen Dutch architect, NL (b. 1921) |
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| niels ingwersen Danish scholar in Scandinavian Studies, US (b. 1935) |
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| alec ingwersen Australian rules footballer, AU (b. 1941) |
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