Locality: Zaghawa (2) Longitude 56deg 30', latitude 1 deg South
(1) Qanbala: Qanbuluh: The island of Qanbalu from where the Zanj slaves were imported till the great Zanj revolt in Basra. (Zanzibar or Pemba)
(2) Zaghawa: also called Beri or Zakhawa, are a Sahelian Muslim ethnic group primarily residing in Fezzan North-eastern Chad, and western Sudan, including Darfur.
As illustration a drawing of Sofala 18th century.