Surname Sonia Ernestina (Sonia Ernestina 
) , around the globe, is a very rare cognomen. The last name Sonia Ernestina is characteristic of Latin America and the Caribbean, particularly Chile, where it is a rare surname. More prevalently, Sonia Ernestina is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sonia Ernestina | Mexico, Peru, Chile, Ecuador |