812

812 (DCCCXII) was a leap year beginning on Thursday of the Julian calendar, in effect on that date.

Events

In Europe

Carolingian Empire

• Treaty of Aachen. The Byzantine Emperor Michael I acknowledges Charlemagne Emperor of the West in exchange for receiving Venice, Istria and Dalmatia.
• Venice rebelled in October to Carlomagno and claimed Greek land to the Byzantines.
• Roncesvalles' second battle between francs and vascons.

Byzantium

• Spain and the Byzantines make peace after a year of war.
• The one that could be called the First Lombard League formed by Venice, Istria and Dalmatia are facing Byzantium and Charlemagne who join against them. The Lombard League is defeated and Istria is again Byzantine while Dalmatia is divided into two. The imperial alliance would not break until 1100 during the crusade.

Births

• April 12: Muhammad al-Taqi, magnet Shi'a

Deaths

• January 11: Stage, Byzantine Emperor
• Du You, Chinese Foreign Minister of the Tang Dynasty (n. 735)
• Belasco, Count of Pamplona.