/year

Al-Ma'mun

Abbasid caliph (786–833, r. 813–833)

11 dated entries naming Al-Ma'mun, drawn from 9 separate years between 786 CE and 833 CE. Nothing here is written by us: each line is the sentence a Wikipedia year article used, and the link beside it opens the exact revision.

JSONWikipedia articleWikidata Q61056

8th century

9th century

  • 813Caliph al Ma’mun founds a school in Baghdad called the House of Wisdom. In this school scholars translated Greek philosophy classics into Arabic.source
  • 819August 11 – Caliph Al-Ma'mun returns to Baghdad, securing the city's place as the capital of the Abbasid Caliphate.source
  • 820Abbasid caliph Al-Ma'mun appoints Isa ibn Yazid al-Juludi as Abbasid governor of Yemen, for a few months.source
  • 821By the time Al-Ma'mun becomes caliph, the Arabs and the Byzantines have settled down into border skirmishing, with Arab raids deep into Anatolia to capture booty.source
  • 827Khalid ibn Abd al-Malik al-Marwarrudhi and Ali ibn Isa al-Asturlabi travel to the Plain of Sinjar (modern Iraq), under orders of Caliph Al-Ma'mun, to measure the size of the Earth.source
  • 831Summer – Muslim Arabs under Caliph Al-Ma'mun launch an invasion into Anatolia (modern Turkey), and capture a number of Byzantine forts. Heraclea Cybistra and Tyana fall to the Arabs.source
  • 832Byzantine–Arab War: The Byzantine fortress of Loulon (modern Turkey) is captured by the Abbasids. Its garrison surrenders to Caliph Al-Ma'mun, after a lengthy siege.source
  • 833Byzantine-Arab War: Emperor Theophilos signs an armistice for peace with the Abbasid Caliphate. He offers Caliph Al-Ma'mun 100,000 gold dinars, in return for 7,000 Byzantine prisoners.source
  • 833August 7 – Caliph Al-Ma'mun dies after a 20-year reign. He is succeeded two days later by his half-brother al-Mu'tasim, as ruler of the Abbasid Caliphate.source
  • 833August 9 – Al-Ma'mun, Muslim caliph (b. 786)source

Named in the same entries