Cognomen Porzio (Porzio 
, Porcius 
) , in the world, is quite a common last name. The last name Porzio is habitual in Italy, where it is quite a rare surname, Paraguay, and Uruguay. Not in comparison with a country's population, it most frequently occurs in Italy, the United States, and Argentina. Much less frequently, Porzio is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Porzio | Paraguay, Argentina, United States, France, Italy |
| Porcius | Spain, Romania, South Africa, United States |
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simone porzio Italian philosopher, IT (b. 1496) |
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| jacopo filippo porzio (b. 1516) |
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| camillo porzio Italian historian (1526-1580), IT (b. 1526) |
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| scipione porzio (b. 1538) |
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| gregorio porzio Greek poet active at the papal court (16th-17th century) (b. 1550) |
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| bartolomeo porzio Roman Catholic bishop (b. 1655) |
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| francesco porzio author (18th century) (b. 1701) |
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giovanni porzio Italian politician, IT (b. 1873) |
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| porzio porciatti Italian lawyer and politician (1827-1894), IT (b. 1827) |
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| francesco porzio IT (b. 1855) |
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| guido porzio birthdate: 1868 deathdate: 1957 viaf: 46905058 (b. 1868) |
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| carlo porzio Italian racing cyclist, IT (b. 1888) |
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| alfredo porzio boxer, AR (b. 1900) |
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| porzio porciatti IT (b. 1896) |
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| domenico porzio Italian writer and journalist (1921-1990), IT (b. 1921) |
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