It originated with Mahommed ibn Tumart, a member of the Masmuda, a Berber tribe of the Atlas.
Mahommed in fact represented a revolt against the anthropomorphism of commonplace Mahommedan orthodoxy, but he was a rigid predestinarian and a strict observer of the law.
In 1212 Mahommed III., "En-Nasir" (1199-1214), the successor of El Mansur, was utterly defeated by the allied five Christian princes of Spain, Navarre and Portugal, at Las Navas de Tolosa in the Sierra Morena.
The amirs of the Muwahhadi Dynasty were as follows:- `Abd-el-Mumin 0145); Yusef II., "Abu Ya`kub" (1163); Ya`kub I., "Abu Yusef el Mansur" (1184); Mahommed III., "En-Nasir" (1199); Yusef III., "Abu Ya`kub el Mustansir" (1214); `Abd-el-Wahid, "El Makhluwi" (1223); `Abd-Allah II., "Abu Mahommed" (1224); Yahya V., "El Mu ` tasim" (1226); Idris III., "El Mamun" (1229); Rashid I., "`Abd-elWahid II."
In 1415 it was recovered by the Turks under Mahommed I., and since that period has belonged to the Ottoman empire.