Family name Byrn (Byrn 
, Бирн 
) , around the world, is a rare last name. The surname Byrn is characteristic of Denmark, where it is a rare surname, Ireland, and the United States. Measured by absolute frequency, this name is the most popular in the United States, Denmark, and Russia. Much less frequently, Byrn is the forename as well as the last name.
| harriet byrn (born 1812) (b. 1812) |
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| preston byrn (born 1813) (b. 1813) |
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| elizabeth ann byrn (born 1814) (b. 1814) |
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| mary p. byrn (1820-1850) (b. 1820) |
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| william byrn Peerage person ID=147959 |
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| mary a byrn researcher (ORCID 0000-0002-3533-8808) |
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| jane byrn Peerage person ID=148726 |
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| anne byrn American cookbook author, US |
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