Family name Proffit-Grehan (Proffit-Grehan 
) , all over the world, is an extremely rare surname. The surname Proffit-Grehan is habitual in Western Europe, particularly France, where it is an extremely rare surname. Parts of the name also exists independently as a last name Proffit, and a last name Grehan.
| VARIANT | COUNTRY |
|---|---|
| Proffit-Grehan | France |