Cognomen Celsi (Celsi 
) , all over the world, is quite a rare surname. The surname Celsi is characteristic of Italy, where it is quite a rare surname, Uruguay, where it is a rare surname, and Chile. In absolute terms, the name is most common in Italy, Argentina, and Chile. Likewise, Celsi is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Celsi | Chile, Italy, Indonesia, United States, Argentina |
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lorenzo celsi Doge of Venice (1310-1365), IT (b. 1310) |
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| mino celsi Italian ambassador and scholar (b. 1514) |
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| iacopo celsi (b. 1520) |
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| bartolomeo celsi HR (b. 1534) |
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angelo celsi Italian cardinal (1600-1671), IT (b. 1600) |
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| guido moroni celsi IT (b. 1885) |
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| santiago celsi association football player, UY (b. 1900) |
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claire celsi American politician, US |
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| jose antonio celsi Chilean racing driver, CL (b. 1952) |
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| fulvio celsi researcher |
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| santiago a. celsi VIAF[68070199] LCAuth[n89601646], AR |
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| orazio celsi Roman Catholic bishop |
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| rodrigo celsi Chilean footballer, CL (b. 1985) |
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| lorenzo celsi IT |
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