Last name Sofanor Guillermo (Sofanor Guillermo 
) , in the entire world, is an extremely rare cognomen. The cognomen Sofanor Guillermo is characteristic of Latin America and the Caribbean, particularly Chile, where it is a very rare surname. More prevalently, Sofanor Guillermo is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sofanor Guillermo | Chile |