Family name Willumsen (Willumsen 
, Виллумсен 
) , worldwide, is quite a rare cognomen. The family name Willumsen is characteristic of Greenland, where it is a common surname, Denmark, where it is quite a common surname, and Norway. In absolute terms, this name is the most popular in Denmark, Norway, and the United States.
| VARIANT | COUNTRY |
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| Willumsen | Norway, Australia, Sweden, United States, Denmark |
| Виллумсен | Russia |
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niels willumsen Danish photographer (b. 1812) |
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jens ferdinand willumsen Danish artist (1864-1958), DK (b. 1863) |
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| juliette willumsen Danish sculptor, DK (b. 1863) |
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| charles willumsen Danish actor, DK (b. 1866) |
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| edith willumsen Danish sculptress, DK (b. 1875) |
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| frederik willumsen Danish politician (1882-1964), DK (b. 1882) |
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| mary willumsen Danish photographer (1884-1961), DK (b. 1884) |
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dorrit willumsen Danish writer, DK (b. 1940) |
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| jan bjørn willumsen Danish painter (1891-1964), DK (b. 1891) |
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| tobias willumsen GL (b. 1884) |
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liv helene willumsen Norwegian historian (b. 1948) |
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| alma olander dam willumsen (b. 1899) |
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| charles willumsen Danish rower, DK (b. 1918) |
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| hanne willumsen Danish actress (b. 1939) |
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| erik wittrup willumsen DK (b. 1931) |
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