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Centuries: 8th century - 9th century - 10th century Decades: 780s 790s 800s 810s 820s - 830s - 840s 850s 860s 870s 880s Years: 831 832 833 834 835 - 836 - 837 838 839 840 841 Events Abbasid caliph al-Mutasim[?] establishes new capital at Samarra, Iraq. Egbert of Wessex is defeated by the Danes. John VII Grammaticus[?] succeeds Antony I[?] as patriarch of Constantinople. Oldest known mentioning of the city of Soest. Births Thabit ibn Kurrah[?], Arabian astronomer Fujiwara no Mototsune, Japanese regent Ethelbert, king of Wessex Constantine I, king of Scotland Deaths
Centuries: 8th century - 9th century - 10th century
Decades: 780s 790s 800s 810s 820s - 830s - 840s 850s 860s 870s 880s
Years: 831 832 833 834 835 - 836 - 837 838 839 840 841
Births
Deaths