Background
Izz ad-Din bin al-Hasan bin Ali was a grandson of the counter-imam al-Hadi Ali (d 1432) and a seventh-generation descendant of imam al-Hadi Yahya (d 1239).
Izz ad-Din bin al-Hasan bin Ali was a grandson of the counter-imam al-Hadi Ali (d 1432) and a seventh-generation descendant of imam al-Hadi Yahya (d 1239).
He proclaimed his da'wa (call for the imamate) in 1474, after the death of the former imam al-Mutawakkil al-Mutahhar. He was considered a forceful leader who revived some of the power of the Zaydiyyah imamate. He was also a man of learning.
Among his works were a text about how to prepare for afterlife, and a treatise on manumission of slaves as compensation for received injuries. At his death, he was buried in Rughafa. He sired eight sons, called an-Nasir al-Hasan, al-Husayn, Ahmad, al-Mahdi, Abdallah, Salah, Abdallah Junior, and Salah Junior.
Of these, an-Nasir al-Hasan then claimed the imamate.