Al-Mansur ibn Nasir

Type Figure Region Hammadid dynasty Time c. 1040–1104 Also known as the Hammadid al-Mansur、Al-Mansur bi-llah

Third Hammadid emir (r. c. 1062–1104), a Berber ruler at Qal'at Bani Hammad who held the central Maghreb against the Almoravids.

Timeline

1061–1065Qal'at Bani Hammad · AlgeriaHe succeeded his father al-Nasir around 1062, consolidated control over the Qal'at plateau and neighboring tribes in the early 1060s, and maintained the Hammadid dynasty's independence as a branch of the Zirids.
1065–1070Algerian plateau · AlgeriaAs Almoravid power expanded westward, al-Mansur maneuvered between submission and resistance, keeping the cities and trade routes of the Hammadid realm running and continuing to expand the capital's buildings and scholarly institutions.

Hammadid dynasty https://www.britannica.com/topic/Hammadid-dynasty
The Cambridge History of Africa, Volume 3: From c.1050 to c.1600 — Roland Oliver (ed.) (1977)