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