Surname Quadrelli (Quadrelli 
) , all over the world, is quite a rare family name. The cognomen Quadrelli is characteristic of San Marino, where it is quite a common surname, Italy, where it is quite a rare surname, and Argentina, where it is a rare surname. Measured by absolute frequency, it most frequently occurs in Italy, Argentina, and Brazil. Much less frequently, Quadrelli is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Quadrelli | France, Argentina, Italy, Brazil, United States |
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sant'alberto quadrelli Italian bishop and saint, IT (b. 1103) |
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| angelica quadrelli Italian opera singer (b. 1600) |
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| emilio quadrelli Italian sculptor (1863-1925), IT (b. 1863) |
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rodolfo quadrelli Italian literary critic, poet and essayist (1939-1984), IT (b. 1939) |
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| silvio quadrelli Italian weightlifter, IT (b. 1889) |
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| enzo quadrelli (b. 1923) |
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| paolo quadrelli IT (b. 1961) |
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| elsje alessandra quadrelli researcher ORCID ID = 0000-0002-8606-1183 |
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| claudio quadrelli Ph.D. Università di Milano Bicocca and Western University 2014 |
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| scott quadrelli researcher (ORCID 0000-0002-6626-9825) |
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| ermanno quadrelli researcher |
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| chiara quadrelli researcher |
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| roberta quadrelli Ph.D., atmospheric science, University of Washington |
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| paola quadrelli IT (b. 1973) |
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| ercole quadrelli |
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Mr, Ruth, Dino, Gabi, Gian, Gina, Gino, Lara, Leda, Lili, Lisa, Lori, Lory, Luca, Luis, Luiz, Luke, Luan, Jose, Joao, Jess, Jean, Rita, Juan, Rick, Rosa, Ms, Ty, Max, Sue, Ana, Rui, Lia, Tim, Vic, Ivo, Ugo, Mara, Memy, Sara, Alex, Anna, Abel, Adam, Ayla, Rafa, Raul, Remo, and Tomi