Cognomen Vernazza (Vernazza 
) , in the world, is quite a rare last name. The last name Vernazza is habitual in Paraguay, where it is quite a rare surname, Uruguay, and Italy. In absolute terms, it most frequently occurs in Italy, France, and Peru. Very seldom, Vernazza is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Vernazza | Democratic Republic of the Congo, Argentina, France, Peru, Italy |
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ettore vernazza Italian philanthropist, IT (b. 1470) |
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| battista vernazza Italian Christian mystic, IT (b. 1497) |
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| livia vernazza IT (b. 1590) |
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giuseppe vernazza Italian historian and politician (1745-1822), IT (b. 1745) |
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| angelo vernazza Italian painter (1869-1937), IT (b. 1869) |
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santiago vernazza Argentine association football player (1928-2017), AR (b. 1928) |
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| eduardo vernazza Uruguayan artist (1910-1991), UY (b. 1910) |
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| jorge vernazza Argentine activist, AR (b. 1925) |
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paolo vernazza British footballer (born 1979), GB (b. 1979) |
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| pietro vernazza Swiss infectiologist (1956-), CH (b. 1956) |
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| daniel vernazza doctoral candidate at the London School of Economics and Political Science |
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| chris r vernazza researcher |
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| stefania vernazza researcher (ORCID 0000-0003-3124-5740) |
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| ruben vernazza Italian musicologist (1986-), IT (b. 1986) |
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