Cognomen Chieffo (Chieffo 
) , throughout the world, is quite a rare surname. The cognomen Chieffo is characteristic of Italy, where it is quite a rare surname, Argentina, where it is a rare surname, and the United States.
| VARIANT | COUNTRY |
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| Chieffo | Italy, Brazil, United States, Canada, Argentina |
| clifford chieffo American artist, US (b. 1937) |
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mary chieffo American actress, US (b. 1992) |
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| claudio chieffo Italian singer-songwriter, IT (b. 1945) |
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| antonio chieffo Italian politician, IT (b. 1952) |
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| raffaella chieffo researcher ORCID ID = 0000-0003-2288-1702 |
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| michael chieffo actor, US |
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| alaide chieffo researcher |
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| sandro chieffo CH (b. 1979) |
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