Events

• September: Basil I becomes sole ruler of the Byzantine Empire.
• September: Patriarch Photius I of Constantinople is removed from office and banished; Ignatius is patriarch of Constantinople once again.
• 14 December: Adrian II becomes pope.

Births

• Emperor Uda of Japan (d. 931)
• Gyeon Hwon, king of Hubaekje (d. 936)

Deaths

• September - Michael III, emperor of Byzantium (assassinated) (b. 839)
• November 13 - Pope Nicholas I
• Kassia, Byzantine poet and composer (b. 810)