Surname Martelli (Martelli 
, Мартелли) , all over the world, is a common cognomen. The cognomen Martelli is characteristic of San Marino, where it is a widespread surname, Monaco, where it is quite a common surname, and Italy. Measured by absolute frequency, it most frequently occurs in Italy, Brazil, and Argentina. Very seldom, Martelli is the forename as well as the last name.
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| Martelli | Brazil, Italy, France, United States, Argentina |
| roberto di niccolò martelli banker (1408-1469) (b. 1408) |
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| ugolino martelli Roman Catholic prelate who served as Bishop of Narni and Bishop of Lecce, died 1523 (b. 1450) |
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braccio martelli FR (b. 1501) |
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ugolino martelli bishop of Glandèves (1519-1592), FR (b. 1519) |
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antonio martelli Italian condottiero, FR (b. 1534) |
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camilla martelli Second wife of Cosimo I de' Medici, FR (b. 1545) |
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| lodovico martelli Italian poet (1500-1527/1528), FR (b. 1499) |
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| niccolo martelli FR (b. 1498) |
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| vincenzo martelli (b. 1509) |
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marco martelli Italian entrepreneur, FR (b. 1592) |
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| francesco martelli (b. 1534) |
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| valentino martelli Italian architect, IT (b. 1550) |
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francesco martelli cardinal and apostolic nuncio, FR (b. 1633) |
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| aurelio martelli Italian artist (1644-1721) (b. 1644) |
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| giuseppe maria martelli Italian priest, FR (b. 1678) |
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