Family name Oldy-Blancia (Oldy-Blancia 
) , in the entire world, is an extremely rare cognomen. Much more frequently, Oldy-Blancia is the forename as well as the last name. Parts of the name also exists independently as a first name Oldy, and a last name Blancia.
| VARIANT | COUNTRY |
|---|---|
| Oldy-Blancia | Democratic Republic of the Congo |