Last name Guidobaldi (Guidobaldi 
) , globally, is a rare cognomen. The cognomen Guidobaldi is habitual in Italy, where it is a rare surname, Argentina, and France, where it is a very rare surname. Much less frequently, Guidobaldi is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Guidobaldi | Italy, Spain, United States, Argentina, France |
| domenico de' guidobaldi Italian historian (1811 - 1902) (b. 1811) |
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| federico guidobaldi Italian Christian archaeologist (1941-), IT (b. 1941) |
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| maria paola guidobaldi (b. 1961) |
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| nicoletta guidobaldi Italian musicologist, IT |
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| héctor alejandro guidobaldi researcher, ORCID id # 0000-0002-5033-2981 |
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| giulia guidobaldi researcher |
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| raul guidobaldi IT |
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Max, Aidee, Carlo, Carla, Cesar, Bruno, Karen, Pablo, Paola, Paolo, Pedro, Ramon, Dario, Guido, Ghino, Laura, Lucia, Lucas, Luigi, Jorge, Julia, Julio, Mauro, Marco, Marta, Mario, Sol, Ana, Leo, Mara, Aldo, Anna, Pina, Rosa, Rene, Gina, Norma, Luca, Jose, Juan, Tony, Nina, Elsa, Enzo, Hugo, Ines, Omar, Maria, Luis, and Elena