Last name Balthazar (Balthazar 
, Бальтазар 
, Балтазар ) , across the world, is quite a common family name. The surname Balthazar is habitual in Dominica, where it is quite a common surname, Haiti, where it is quite a rare surname, and Mauritius. Not in comparison with a country's population, it is the most numerous in Brazil, the United States, and France. Also, Balthazar is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Balthazar | Brazil, Haiti, Belgium, United States, France |
| Балтазар, Бальтазар | Ukraine, Russia, Kazakhstan |
| Baltassar | United States, Mexico, Brazil |
Balcer, Baldassare, Baldassarre, Balsazar, Baltasar, Baltazar, Baltazár, Balthasar, Balthassar, Balthazard, Balthazaro, Balthazár, Baltsar, Baltzar, Boldizsar, Boldizsár, Boltezar, Boltežar, Балтхазар, and Болдижар
| balthazar of brunswick-grubenhagen (b. 1336) |
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balthazar houwaert DE (b. 1525) |
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balthazar de moucheron Dutch trader, NL (b. 1552) |
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| balthazar arnoullet French printer, FR (b. 1517) |
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| balthazar gago (b. 1520) |
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| balthazar de beaujoyeulx Italian/French composer and musician, FR (b. 1535) |
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balthazar gerbier Anglo-Dutch courtier, diplomat, NL (b. 1592) |
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| balthazar de villars FR (b. 1557) |
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| balthazar bellère (b. 1564) |
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balthazar de loyola Moroccan prince converted to Catholicism, MA (b. 1631) |
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balthazar martinot French master clockmaker, FR (b. 1636) |
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| balthazar de vias French poet, FR (b. 1587) |
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balthazar phélypeaux de châteauneuf French writer, FR (b. 1638) |
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| balthazar de budos French Catholic priest, FR (b. 1594) |
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| balthazar baro French writer, FR (b. 1596) |
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