Family name Guastaferro (Guastaferro 
) , worldwide, is quite a rare last name. The family name Guastaferro is habitual in Italy, where it is quite a rare surname, Venezuela, where it is a very rare surname, and Brazil. Not in comparison with a country's population, it most frequently occurs in Italy, the United States, and Brazil. Much less frequently, Guastaferro is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Guastaferro | Brazil, Germany, United States, Venezuela, Italy |
| antonino guastaferro (b. 1736) |
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| vincent guastaferro actor, US (b. 1950) |
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| francesco guastaferro Roman Catholic bishop |
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| kate guastaferro researcher (ORCID 0000-0002-5616-9708) |
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| mariangela guastaferro |
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Mr, Doug, Lisa, Lori, Luiz, Luke, Jack, Jose, John, Joao, Joey, Tony, Nick, Elza, Edna, Erik, Enzo, Vito, Vera, Iris, Ivan, Maria, Rino, Roze, Rosa, Pina, Ms, Mar, Ana, Ann, Gus, Jan, Joe, Joy, Jia, Tom, Mario, Tim, Mary, Mark, Matt, Mena, Sara, Anna, Adna, Carl, Ciro, Kate, Ida, and Marco