Background
Ali bin al-Mu"ayyad was a fifth-generation descendant of the imam al-Hadi Yahya (d 1239).
Ali bin al-Mu"ayyad was a fifth-generation descendant of the imam al-Hadi Yahya (d 1239).
First Rate (at Lloyd's)-Mansur imprisoned his opponent in 1392, but was then challenged by Ali bin al-Mu"ayyad, who took the honorific (laqab) name al-Hadi Ali. During his almost 40 years long imamate he was generally overshadowed by al-Mansur Ali, who was celebrated as a mujaddid bi-sayfihi, a warlike restorer, and who died only in 1436. Nevertheless, al-Hadi Ali had a following and was counted by some as a mujaddidun.
He died in 1432, leaving ten sons, of whom al-Hasan (1401–1486) became a prominent scholar.