عبد المؤمن بن علي
Exactly how Abd al-Mu'min imposed himself is uncertain. As a Zenata Berber, Abd al-Mu'min was an alien among the Masmuda. But that foreignness itself might have recommended him as a neutral choice to the Masmuda "sheikhs", as it would avoid the appearance of favoritism towards any particular tribe. Nonetheless it is reported that the more easterly Masmuda tribes, the Haskura and the Harzaja, rejected Abd al-Mu'min's leadership and broke away from the Almohad coalition at this stage. Abd al-Mu'min would have to force them back to the fold. (Ibn Khaldun reports (improbably) that Abd al-Ma'mun managed to conceal the death of Ibn Tumart for nearly two years, in order to gather allies and marry the daughter of Omar Hintati, who would become his principal ally.) His principal rival Ibn Malwiya was captured, condemned and executed by 1132, and Ibn Tumart's own family soon disappears from significance, their roles eclipsed by Abd al-Mu'min's own family, the future dynasty of Almohad caliphs. Whatever doubts lingered about Abd al-Mu'min's leadership certainly dissipated a decade later, when Abd al-Mu'min led the renewed Almohads down from the mountains on a seven-year campaign of conquest of Morocco, culminating in the fall of Marrakesh in 1147.