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Cognomen Petronilo (Petronilo
) , across the world, is quite a common family name. The family name Petronilo is habitual in Latin America and the Caribbean, particularly Mexico, where it is quite a rare surname, Honduras, and Nicaragua. In absolute terms, this name is the most popular in Mexico, Spain, and Brazil. Likewise, Petronilo is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Petronilo | Honduras, Spain, Philippines, Brazil, Mexico |