Kotoko

…is believed that the modern Kotoko, a fishing people on the Chari near Lake Chad, are descendants of the Sao.

…and Chari rivers are the Kotoko, who are supposedly descended from the ancient Sao population that formerly lived in the region. The Yedina (Buduma) and Kuri inhabit the Lake Chad region and, in the Kanem area, are associated with the Kanembu and Tunjur, who are of Arabic origin. All of…

…conquered and destroyed by the Kotoko state, which extended over large portions of northern Cameroon and Nigeria. Kotoko was incorporated into the Bornu empire during the reign of Rābiḥ al-Zubayr (Rabah) in the late 19th century, and its people became Muslims.