Years: 821 822 823 824 - 825 - 826 827 828 829

Decades: 790s 800s 810s - 820s - 830s 840s 850s

Centuries: 8th century - 9th century - 10th century

Events

• Egbert of Wessex defeats Beornwulf of Mercia at Ellandun. Kent, Surrey, Sussex and Essex submit to Wessex and East Anglia acknowledges Egbert as overlord.
• Emperor Louis the Pious of the Franks wars against the Wends and Sorbs.

Births

• Louis II, Holy Roman Emperor (d. 875)

Deaths