Surname Ercolani (Ercolani 
) , all around the world, is quite a common cognomen. The last name Ercolani is habitual in San Marino, where it is a common surname, Italy, where it is quite a rare surname, and Switzerland. In absolute terms, this name is the most popular in Italy, the United States, and Switzerland. Very seldom, Ercolani is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Ercolani | Italy, Switzerland, United States, Argentina, France |
| vincenzo ercolani Italian Roman Catholic archbishop, IT (b. 1517) |
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| francesco ercolani (b. 1541) |
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| girolamo ercolani Italian Dominican theologian (ca. 1618-1668) (b. 1618) |
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| francesco ercolani (b. 1659) |
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| giuseppe maria ercolani Italian theologian, architect, jurist, writer and mathematician, IT (b. 1672) |
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luigi ercolani Italian cardinal (1758-1825), IT (b. 1758) |
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| carlo ercolani IT (b. 1756) |
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| fortunato maria ercolani IT (b. 1775) |
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| giovanni battista ercolani Italian physician and veterinarian, IT (b. 1817) |
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| remo ercolani basso (1860-1933), IT (b. 1860) |
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| andrea ercolani Italian politician (1874-1948), IT (b. 1874) |
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| lucian ercolani British furniture designer (b. 1888) |
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| alceo ercolani Italian politician (1899-1968), IT (b. 1899) |
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| giuseppe ercolani Italian cyclist, IT (b. 1901) |
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| ernesto ercolani Italian painter and engraver, IT (b. 1909) |
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