Surname Guastafierro (Guastafierro 
) , worldwide, is a rare last name. The last name Guastafierro is habitual in Italy, where it is quite a rare surname, Chile, where it is a very rare surname, and the United States, where it is an extremely rare surname.
| VARIANT | COUNTRY |
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| Guastafierro | Chile, Brazil, Italy, United States |
| erika guastafierro researcher |
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| antonio guastafierro researcher |
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| francesca guastafierro researcher |
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| anna guastafierro researcher |
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| tiziana guastafierro researcher |
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Ida, Viola, Fabio, Fiore, Marzia, Mattia, Sabato, Simona, Sergio, Andrea, Angela, Angelo, Amedeo, Aurora, Chiara, Carmen, Pamela, Pietro, Dennis, Davide, Giulia, Teresa, Erika, Elisa, Tonio, Luigi, Ian, Sara, Anna, Ciro, Pino, Rosa, Rosy, Gino, Luca, Tina, Nicola, Enzo, Maria, Mario, Marco, Carlo, Paolo, Peppe, Giusy, Lella, Lucia, Luisa, Olga, and Emilia