Almoravid dynasty

The Almoravid state was founded by Abd Allah ibn Yasin al-Juzuli among the veiled tribes of Lamtuna, Jaddala and Masufa. Ibn Khaldun says that he named them the Almoravids after their ribat on an island in the Nile. ¹

Their emir Yahya ibn Umar conquered Sijilmasa in 445 AH. Then the rule was firmly established for Yusuf ibn Tashfin, who laid out Marrakesh in 454 AH. ¹

Ibn Khaldun says that he subdued the regions of the Maghrib, and added al-Andalus after the battle of al-Zallaqa. See Yusuf ibn Tashfin. ¹

Their rule continued until the Almohads took Marrakesh in 541 AH. The entity data state that Abd al-Mu'min and the Almohads killed Ishaq ibn Ali, their last king, in that year. See the Almohad state. ¹

Ibn Yasin set out from the ribat with a thousand men around 435 AH (about 1042 CE), and the end came in 541 AH (1147 CE). The conversion to the Gregorian calendar is derived. A second source is needed for the dates. ¹

The data also state that it succeeded the Ghana Empire; this needs a further source.