Years: 861 862 863 864 - 865 - 866 867 868 869

Decades: 830s 840s 850s - 860s - 870s 880s 890s

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

Events

• Ethelred succeeds as king of Wessex (or 866).
• Ragnar Lodbrok invades England, but is defeated by king Ella of Northumbria
• A Russian expedition for the first time threatens Constantinople.
• Louis the German divides his kingdom among his sons.
• Lothair , threatened with excommunication, takes back his first wife,
• Bulgaria under Boris I converts to Orthodox Christianity.

Births

• Robert I, king of France (approximate date) (d. 923)

Deaths

• Saint Ansgar (b. 801)
• Ragnar Lodbrok, King of Denmark and Sweden
• Ethelbert, king of Wessex (or 866)