Cognomen Castellar (Castellar 
) , in the entire world, is quite a common family name. The cognomen Castellar is characteristic of Latin America and the Caribbean, particularly Colombia, where it is quite a rare surname, Puerto Rico, and Venezuela. Measured by absolute frequency, it is the most numerous in Latin America and the Caribbean, particularly Colombia, Venezuela, and Brazil. Very seldom, Castellar is the forename as well as the last name.
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| Castellar | Spain, Colombia, Venezuela, Brazil, United States |
| jaume castellar (b. 1250) |
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juan castellar y de borja Roman Catholic cardinal, ES (b. 1441) |
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| antonio lascaris di castellar Italian politician (b. 1436) |
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| juan dolz del castellar Spanish philosopher, ES (b. 1450) |
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| antonio sánchez del castellar Roman Catholic bishop (b. 1622) |
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| esteban dolz del castellar (b. 1653) |
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| giulio cesare lascaris di castellar count (19th century) (b. 1801) |
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| antoní marqués castellar Spanish painter and architect (b. 1915) |
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| javier castellar Spanish cyclist, ES (b. 1961) |
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| edgardo parrilla castellar researcher |
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| castellar modesto guimarães Brazilian lawyer, BR |
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| pablo castellar BR (b. 1976) |
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| juan bautista amat y castellar ES |
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| giuseppe baccher castellar |
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| jesús gerardo hernández castellar Venezuelan association football player, VE |
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