Events

By place

Byzantine Empire

• September—Basil I becomes sole ruler of the Byzantine Empire.

• Macedonian dynasty is started.

By topic

Religion

• September—Patriarch Photius I of Constantinople is removed from office and banished; Ignatius is patriarch of Constantinople once again.

• December 14—Pope Adrian II (also referred to as Hadrian II) succeeds Pope Nicholas I as the 106th pope.

Births

• Emperor Uda of Japan (d. 931)

• Gyeon Hwon, King of Hubaekje (d. 936)

• Emperor Zhaozong of Tang

• Mingzong of Later Tang

Deaths

• March 21 – King Ælla of Northumbria

• September—Michael III, Byzantine Emperor (assassinated) (b. 839)

• November 13—Pope Nicholas I

• Count Galindo I Aznárez of Aragon

• Kassia, Byzantine poet and composer (b. 810)

• December 16 – Evrard (soldier of Charlemagne, Duke of Frioul)

• After 867 – Theodora the Armenian, empress of Byzantine.