Al-Ma'mun, Abbasid caliph, 7th (died 833)

Al-Ma'mun

Abbasid Caliph from 813 to 833

Abū al-ʿAbbās Abd Allāh ibn Hārūn al-Maʾmūn, better known by his regnal name al-Ma'mun, was the seventh Abbasid caliph, who reigned from 813 until his death in 833. His leadership was marked by the power and prosperity of the Abbasid Caliphate, al-Ma'mun promoted the…