Cognomen Ronchi (Ronchi 
) , around the world, is a common last name. The cognomen Ronchi is characteristic of Italy, where it is quite a common surname, Argentina, where it is quite a rare surname, and Switzerland. Not in comparison with a country's population, it is the most numerous in Italy, Brazil, and Argentina. Very seldom, Ronchi is the forename as well as the last name.
| gaetana secchi ronchi 1700-? (b. 1700) |
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| carlo ronchi Roman Catholic bishop (1701-1764) (b. 1701) |
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| felice ronchi French painter (1710-), FR (b. 1710) |
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| orazio ronchi IT (b. 1756) |
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| maria ronchi author (b. 1801) |
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| francesco ronchi Italian magistrate and writer, IT (b. 1801) |
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| oliviero ronchi Italian librarian, IT (b. 1874) |
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antonio ronchi Priest of Patagonia, IT (b. 1930) |
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| vittorio ronchi Italian agronomist (1892-1987), IT (b. 1892) |
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| vasco ronchi Italian physicist, FR (b. 1897) |
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| arnaldo ronchi Italian artist, IT (b. 1898) |
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edo ronchi Italian politician, IT (b. 1950) |
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andrea ronchi Italian politician, IT (b. 1955) |
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| apolo ronchi UY (b. 1896) |
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rocco ronchi Italian philosopher, IT (b. 1957) |
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