Claim: 1506 Xosa, discovered by C. Jackson on May 15, 1939 in Johannesburg Obs., was named after the Xhosa people, a Bantu ethnic group.
Evidence: It was discovered on 15 May 1939, by English-born, South African astronomer Cyril Jackson at the Johannesburg Observatory in South Africa. This minor planet was named after the Xhosa (formerly spelled "Xosa"), a Bantu ethnic group of native people in south-east South Africa, and who came into early contact with the white settlers. 
C. Jackson 15 May 1939 Johannesburg Obs. Xhosa people
(Bantu ethnic group)