Born in Musumba, Lualaba District, a member of the Lunda tribe and a nephew of the Katangan leader, Moise Tshombe, Nguza was a pock-marked child who rose rapidly through government posts and gained the favour of President Mobutu Sese Seko.
The Lunda (Balunda, Luunda, Ruund) originated in what is now the Democratic Republic of the Congo along the Kalanyi River and formed the Kingdom of Lunda in the 17th century under their ruler, Mwata Yamvo or Mwaant Yav, with their capital at Musumba.