Last name Vilallonga (Vilallonga 
) , worldwide, is a rare cognomen. The surname Vilallonga is characteristic of Spain, where it is a rare surname, Portugal, where it is a very rare surname, and Argentina. Not in comparison with a country's population, it is the most numerous in Spain, France, and Argentina. Also, Vilallonga is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Vilallonga | Spain, France, United States, Argentina, Peru |
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jaume vilallonga balam Spanish painter, ES (b. 1861) |
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| josé vilallonga ES (b. 1822) |
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josé luis de vilallonga Spanish journalist and actor (1920-2007), ES (b. 1920) |
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mariàngela vilallonga vives Catalan philologist, professor and literary historian, ES (b. 1952) |
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| luis maría vilallonga (b. 1896) |
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alfonso vilallonga Spanish composer, ES (b. 1962) |
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| maria teresa boada i vilallonga Spanish-Catalan librarian (b. 1915) |
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| josep vilallonga i ribalta Catalan tailor, ES (b. 1922) |
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mercedes arbaiza vilallonga ES (b. 1963) |
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| isabel vilallonga elviro Spanish politician, ES (b. 1949) |
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| gabriel vilallonga (b. 1960) |
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| ramon vilallonga researcher |
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| atalanta de vilallonga (born 1987) (b. 1987) |
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| narcís saderra i vilallonga |
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| jaume taulina i vilallonga ES |
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