Eastern Cape Separatist League
The Eastern Province Separatist League was a loose political movement of the 19th century Cape Colony. It fought not for independence, but for a separate colony in the eastern half of the Cape Colony independent from the Cape government, with a more restrictive political system and an expansionist policy eastwards against the remaining independent Xhosa states.
Source: Wikipedia — Eastern Cape Separatist League (CC BY-SA 4.0)