Ibn Yasin

'Abd Allah ibn Yasin was the son of Tin Izamarren of the Jazula. He became a malekite theologist from the school of Dar al-Murabitin. Around 1039, he was sought by Yahya b. Ibrahim, leader of the Juddala, who wanted to purify and reinforce the faith of his people. Ibn Yasin accepted to accompany the man to the south and the Sahara to help in his call and together, they founded the Almoravid movement.
Once in the Adrar region, Ibn Yasin created a ribat to teach warrior disciples that took the name of Murabitun. He was strict, faithful, and then more strict. Upon his arrival, it is said he refused to eat meat or drink milk because, he said, the people's corruption had corrupted the cattle. Well, it is also said he married and divorced several times a month, which sounds very much like Cassius Dio styled rumours...
Still, many Juddala thought ibn Yasin's religion to be too strict and militaristic. When their leader Yahya died about 1048, they turned against ibn Yasin, and he made instead an alliance with Yahya b. 'Umar, one of the leaders of the Lamtouna who ruled Awdaghust and had just climbed to reign on the entire Sanhaja federation. Ibn Yasin gave his army and movement to Yahya of the Lamtouna and his brother Abu Bakr to better focus himself on the intellectual side of his religious reform.
Soon after, Ibn Yasin recieved a call from the oulemas of the Tafilelt and Dra'. In that year of 1054, they asked him to interfer in the affairs of Sijilmasa who was under the "tyranny", they said, of the Maghrawa from the Zenet federation and their amir Mas'ud ibn Wanudin, who ruled in the name of the Andalusian Omeyyads.
From this point on, 'Abd Allah followed in a series of campaigns led by Abu Bakr b. 'Umar. He died in 1059 during the war against the Berghwata Realm.