814

Europe

 * dies in, aged 67 or 72 (depending on source)
 * succeeds Charlemagne as king of the and Emperor.
 * Formation of

Byzantine Empire

 * The ns lay siege before.

Religion

 * Conflict between emperor and patriarch  on the subject of . Leo deposes Nicephorus, Nicephorus excommunicates Leo.

Births

 * , Emperor of (d. )

Deaths

 * —, king of the Franks and Emperor
 * —, Frankish politician
 * March — abbot, advisor of
 * —, khan of (brain hemorrhage)
 * , Chinese Buddhist monk (born )