Harun al-Rashid

Abu Ja'far Harun ibn Muhammad al-Mahdi or simply Harun ibn al-Mahdi, famously known as Harun al-Rashid, was the fifth Abbasid caliph of the Abbasid Caliphate, reigning from September 786 until his death in March 809. His reign is traditionally regarded to be the beginning of the Islamic Golden Age.