 He reigned over the eastern part of the Ondonga area from 1884 until his death; Kambonde II kaMpingana was chief of the western part.Under Mpingana's leadership the Ondonga fought and won two wars against intruders into their area.In 1886, South African settlers on their Dorsland Trek were defeated after they—allegedly fraudulently—acquired land between Otavi and Grootfontein, and declared it to be the Republic of Upingtonia.