Hasan ibn Ali
Hasan ibn Ali (born in March 4, 625 CE died in March 9 or 30, 670 CE). was an Alid political and religious leader. He was the son of Ali and his wife Fatimah. After the death of his father, Hasan was chosen the caliph by a group of Muslims in Kufa. He was not accepted as the caliph by the Umayyad leader Mu'awiya. Both signed a peace treaty around August 661 and Mu'awiya became the sole caliph of the Muslim community. Hasan was also a member of Ahl al-Bayt.