Surname Pierleoni (Pierleoni 
) , all over the world, is quite a rare family name. The last name Pierleoni is habitual in Italy, where it is quite a rare surname, Switzerland, where it is a rare surname, and Argentina. In absolute terms, the name is most common in Italy, the United States, and Argentina. Very seldom, Pierleoni is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Pierleoni | United Kingdom, Argentina, Italy, United States, Switzerland |
| ugo pierleoni IT (b. 1110) |
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| ugo pierleoni cardinal, IT (b. 1150) |
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| gino pierleoni Italian classical philologist (1875-1951), IT (b. 1875) |
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| angelo pierleoni Italian association football manager and association football player, IT (b. 1962) |
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| andrea pierleoni researcher |
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| tommaso pierleoni Roman Catholic bishop |
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| carlo pierleoni researcher |
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| paola pierleoni researcher |
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| angelo pierleoni bishop of the Roman Catholic Church |
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| benedicte pierleoni |
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Mr, Elsa, Enzo, Emma, Ivan, Maria, Marie, Mario, Marco, Maira, Mauro, Megan, Mirco, Sirle, Susan, Sonia, Sofia, Steve, Alice, Allen, Chris, Carlo, Juan, Joan, John, Lynn, La, Joe, Tim, Eva, Ugo, Mark, Sara, Anna, Carl, Cara, Carol, Ciro, Paul, Pino, Rosa, Rita, Gail, Gina, Gino, Gwen, Lisa, Luca, Ciel, and Cindy