Last name Cuéllar (Cuéllar 
) , around the world, is quite a common family name. The cognomen Cuéllar is habitual in Latin America and the Caribbean, particularly El Salvador, where it is quite a common surname, Bolivia, and Guatemala, where it is quite a rare surname. Not in comparison with a country's population, it most frequently occurs in Latin America and the Caribbean, particularly El Salvador, Bolivia, and Colombia.
| VARIANT | COUNTRY |
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| Cuéllar | El Salvador, Bolivia, Colombia, Mexico, Guatemala |
| pedro de cuéllar ES (b. 1280) |
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| antonio de cuéllar ES (b. 1401) |
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francisco gutiérrez de cuéllar Spanish tax expert of the 16th-century, ES (b. 1518) |
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| juan de cuéllar Spanish musician, ES (b. 1500) |
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| matías de cuéllar Spanish writer, ES (b. 1501) |
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| francisco de cuéllar Spanish sailor, ES (b. 1562) |
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juana rangel de cuéllar Founder of Colombian city, CO (b. 1649) |
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| ferdinando sánchez de cuéllar Roman Catholic bishop (b. 1602) |
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| jerónimo cuéllar Spanish writer (1622-1666), ES (b. 1622) |
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| josé francisco de perea y vargas y velázquez de cuéllar Spanish military personnel, ES (b. 1688) |
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| antonio lorenzo josé donoso benito andrade y cuéllar Prosecutor of the Spanish Royal Court of Manila (b. 1732) |
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| juan de cuéllar Spanish botanist (1739-1801), ES (b. 1739) |
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| basilio cuéllar Bolivian lawyer (1802-1882), BO (b. 1802) |
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julio burell y cuéllar Spanish politician and journalist, ES (b. 1859) |
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nicolás cuéllar Mexican artist, MX (b. 1927) |
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