Family name Blanca Rosalia (Blanca Rosalia 
) , in the world, is an extremely rare last name. The cognomen Blanca Rosalia is characteristic of Latin America and the Caribbean, particularly Chile, where it is a very rare surname. Much more frequently, Blanca Rosalia is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Blanca Rosalia | Paraguay, Bolivia, Peru, Ecuador, Chile |