Last name Granville-Roberts (Granville-Roberts 
) , in all the world, is an extremely rare family name. The family name Granville-Roberts is habitual in Sub-Saharan Africa, particularly South Africa, where it is a very rare surname. Parts of the name also exists independently as a first name Granville, and a last name Roberts.
| VARIANT | COUNTRY |
|---|---|
| Granville-Roberts | South Africa |