- 1640.06.27: Established as Apostolic Prefecture of Lower Congo / Congo Inferiore (Italiano) / Portuguese Congo (from Diocese of São Paulo de Loanda)
- 1886.11.22: Lost territory to establish Mission sui juris of Congo Belge
- 1886: Renamed as Apostolic Prefecture of Lower Congo in Cubango
- 1900: Lost territory to establish Mission sui juris of Lunda
- 1940.09.04: Suppressed (to Metropolitan Archdiocese of Luanda)