Last name Clother-Sinclair (Clother-Sinclair 
) , in all the world, is a very rare surname. Family name Clother-Sinclair is characteristic to South Africa, where it is a very rare surname, and Australia, where it is an extremely rare surname. Parts of the name also exists independently as a last name Clother, and a last name Sinclair.
| VARIANT | COUNTRY |
|---|---|
| Clother-Sinclair | South Africa, Australia |