Cognomen Brynildsen (Brynildsen 
) , worldwide, is quite a rare surname. The family name Brynildsen is characteristic of Northern Europe, particularly Norway, where it is quite a common surname, Latvia, where it is a rare surname, and Denmark. Measured by absolute frequency, it is the most numerous in Norway, the United States, and Denmark.
| VARIANT | COUNTRY |
|---|---|
| Brynildsen | Norway, Latvia, Sweden, United States, Denmark |
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diderich anton brynildsen Norwegian politician (b. 1853) |
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john brynildsen NO (b. 1852) |
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| benedicte brynildsen Norwegian author, NO (b. 1857) |
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| knut brynildsen Norwegian footballer (1917-1986), NO (b. 1917) |
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| aasmund brynildsen Norwegian essayist (1917-1974), NO (b. 1917) |
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eyvind brynildsen Norwegian rally driver, NO (b. 1988) |
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| lars kristian brynildsen Norwegian musician (b. 1954) |
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| ivar brynildsen Norwegian contributing editor (b. 1959) |
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| julia k brynildsen researcher (ORCID 0000-0002-1627-6576) |
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| mark p brynildsen researcher (ORCID 0000-0001-5707-8894) |
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