What is "kousop"

Kousop (also rendered Kausob or Kausobson), birth date unknown, killed in a battle at Slypklip, Vaal River, near Kimberley, Northern Cape, South Africa, on 6 July 1858, was the leader of a group of San or Khoe-San who inhabited the area between the Modder, Riet and Vaal Rivers, western Orange Free State, in the mid nineteenth century.