The Kwangwa are an offshoot of the Luyi people.
The Luyi people arrived around Mongu on the Barotse Floodplain in the mid-1600s under the leadership of a woman named Mwambwa. Mwambwa’s daughter took over the leadership but was challenged by her son, Mboo, who then took charge.
It was during Mboo’s reign that two of his relatives, Mange and Mwanabinyi, went out to form their own chieftainships. Mwanabinyi went south to form his own clan named Kwandi; he took over land then occupied by the Subiya and Mbukushu. (The Subiya are still part of the tribal make-up of Zambia, but the Mbukushu are now only present in the Caprivi and northern Botswana). Mange went east and formed the Kwangwa people; he occupied land which was then land used by the Nkoya. …
To read more: https://traditionalzambia.home.blog/tribes-of-zambia/the-kingdoms/luba/lozi/kwangwa/
Zambia's Traditional History 