Surname Twrdy (Twrdy 
) , globally, is a rare cognomen. The last name Twrdy is characteristic of Slovenia, where it is quite a rare surname, Austria, where it is a rare surname, and Czechia. Not in comparison with a country's population, this name is the most popular in Austria, Slovenia, and Germany.
| franz xaver twrdy Roman Catholic bishop (b. 1715) |
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| franz xaver twrdy Czech judge and legal historian (ca1760-1827), CZ (b. 1760) |
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elen twrdy SI (b. 1966) |
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| johann twrdy |
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| viki twrdy SI (b. 1988) |
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