Yahya Ibn Ibrahim
Yahya Ibn Ibrahim (Arabic: يحيى بن إبراهيم الجدالي) (c. 1048) was a leader of the Godala tribe in the Adrar plateau modern day Mauritania. Yahya Ibn Ibrahim's primary significance was in his involvement with Abdallah ibn Yasin, a Berber Muslim theologian with whom he founded the Almoravid movement. Yahya Ibn Ibrahim is the first Almoravid emir. His successor Yahya ibn Umar was his nephew.