عبد الله بن ياسين
Yahya's brief career as the first Almoravid emir came to a premature end. After his death, Abdallah ibn Yasin immediately appointed Yahya's brother, Abu Bakr ibn Umar, to succeed him as the new Almoravid emir. Under Abu Bakr's leadership, the Almoravids would re-conquer Sijilmassa, and go on to a spectacular career, conquering most of the rest of Morocco in the 1070s and eventually come back down to finish off what remained of Ghana in the 1080s.