Family name Tavaststjerna (Tavaststjerna 
) , across the world, is a rare cognomen. The cognomen Tavaststjerna is characteristic of Northern Europe, particularly Finland, where it is quite a rare surname, and Sweden, where it is a rare surname. Much less frequently, Tavaststjerna is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Tavaststjerna | Sweden, Finland, China |
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k. a. tavaststjerna Finnish writer, FI (b. 1860) |
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gabrielle tavaststjerna Swedish actor, SE (b. 1868) |
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| august tavaststjerna RU (b. 1821) |
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| hilja tavaststjerna Finnish writer, FI (b. 1848) |
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| henrik johan august tavaststjerna FI (b. 1856) |
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| olga tavaststjerna FI (b. 1858) |
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| fanny tavaststjerna FI (b. 1860) |
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| alarik tavaststjerna FI (b. 1873) |
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