Cognomen Marengo (Marengo 
) , in all the world, is a common family name. The surname Marengo is habitual in Seychelles, where it is quite a common surname, Suriname, and Paraguay, where it is quite a rare surname. Not in comparison with a country's population, this name is the most popular in Italy, Argentina, and the United States. Very seldom, Marengo is the forename as well as the last name.
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| Marengo | Peru, Argentina, Italy, Brazil, United States |
| giovanni francesco marengo 16th-century Italian physician, IT (b. 1525) |
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| domenico marengo Roman Catholic bishop (b. 1570) |
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| carlo marengo Italian politician, IT (b. 1813) |
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| josé maría santucho y marengo ES (b. 1807) |
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| domenico raffaele francesco marengo Roman Catholic archbishop (b. 1842) |
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lina marengo Italian actress (1911-1987), IT (b. 1911) |
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anna marengo Italian partisan (1915-2007), IT (b. 1915) |
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| enrico marengo IT (b. 1862) |
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| silvio marengo Italian association football player, association football manager and association football referee, IT (b. 1884) |
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| francesco marengo (b. 1875) |
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| isabel marengo Argentinian singer, AR (b. 1894) |
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| juan tanca marengo Ecuadorian physician, EC (b. 1895) |
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| mildred mcausland marengo Botanist (b. 1905) |
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| manuel marengo Argentinian bishop, AR (b. 1906) |
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| orestes marengo Italian priest, IT (b. 1906) |
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