Cognomen Bræin (Bræin 
) , all over the world, is a very rare last name. The cognomen Bræin is characteristic of Norway, where it is a rare surname, Denmark, where it is a very rare surname, and the United States, where it is an extremely rare surname.
| christian bræin Norwegian composer, organist and violinist (1837-1912), NO (b. 1837) |
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| harald bræin Norwegian farmer, organist (b. 1864) |
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| edvard bræin Norwegian composer, conductor and organist, NO (b. 1887) |
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| edvard fliflet bræin Norwegian musician, NO (b. 1924) |
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| hans christian bræin Norwegian musician and professor (b. 1948) |
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| kristina bræin Norwegian visual artist (b. 1955) |
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| hallvard bræin (b. 1965) |
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| ditte marie bræin Norwegian singer (b. 1985) |
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