Dashed left edge = started before September 813 ·
Dashed right edge = ongoing beyond September 813
Events in September 813 3
787 – 813Al-Amin (787-813)Died 25 September 813, aged 26Al-Amin was the sixth Abbasid Caliph, succeeding his father Harun al-Rashid in 809. He was captured and beheaded during the siege of Baghdad after losing the civil war against his brother al-Ma'mun.
813Louis the Pious Crowned Co-EmperorCharlemagne elevates his son at AachenCharlemagne, nearing the end of his life, crowned his surviving son Louis the Pious as co-emperor in a ceremony at Aachen. The act secured an orderly succession for the Carolingian Empire ahead of Charlemagne's death the following year.
813Siege of Baghdad Ends the Fourth FitnaCaliph al-Amin is killed and al-Ma'mun takes the throneAfter a prolonged siege of Baghdad, forces loyal to al-Ma'mun captured and executed his half-brother, Caliph al-Amin, ending the civil war between the two sons of Harun al-Rashid. Al-Ma'mun was proclaimed Caliph, though he ruled from Khorasan for several more years before entering Baghdad.