Family name Orengo (Orengo 
) , in all the world, is quite a common cognomen. The cognomen Orengo is characteristic of Monaco, where it is quite a common surname, Puerto Rico, and Bolivia, where it is quite a rare surname. Not in comparison with a country's population, this name is the most popular in Kenya, France, and the United States. Very seldom, Orengo is the forename as well as the last name.
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| Orengo | Kenya, Bolivia, Puerto Rico, United States, France |
| paolo girolamo orengo Roman Catholic bishop (1734-1812) (b. 1734) |
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paolo orengo politician (1828-1921), IT (b. 1828) |
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| lorenzo orengo Italian sculptor (1838-1909), IT (b. 1838) |
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| luigi orengo IT (b. 1865) |
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| nicola orengo Italian librarian (1894-after 1930), IT (b. 1894) |
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| rinaldo orengo Italian Esperantist, IT (b. 1895) |
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christine orengo Professor of Bioinformatics (b. 1955) |
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| joe orengo American baseball player, US (b. 1914) |
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josé manuel orengo pastor Spanish politician, ES (b. 1966) |
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| roger orengo French association football player (1925-2014), FR (b. 1925) |
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| gilbert orengo Monegasque fencer, MC (b. 1934) |
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| nico orengo Italian poet, writer and journalist, IT (b. 1944) |
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| james orengo Kenyan lawyer, politician, KE (b. 1951) |
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| alessandro orengo Italian armenist (1957-), IT (b. 1957) |
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| jean-noël orengo French writer, FR (b. 1975) |
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