836

By place

Abbasid Caliphate

• Driven by tensions between his favoured Turkish guard and the populace of Baghdad, Abbasid caliph al-Mu'tasim moves his residence to the new city of Samarra, 130 km north of Baghdad. With brief interruptions, the city will remain the seat of the Abbasid caliphs until 892.

  Britain

• Battle of Carhampton: Danish Vikings arrive in West Saxon, North Devon and Somerset. King Egbert of Wessex fights them, but he is forced to withdraw.

  Europe

• July 4 - Pactum Sicardi: Prince Sicard of Benevento signs a 5-year armistice with the duchies of Sorrento, Naples and Amalfi. He recognizes the trade of merchants among the three cities in Southern Italy.
• Malamir, ruler of the Bulgarian Empire, dies after a 4-year reign and is succeeded by his nephew Presian I. Because of his young age and inexperience, the Bulgarian state affairs are dominated by his minister and commander-in-chief Isbul.
• Pietro Tradonico is appointed doge of Venice.

  By topic

Religion

• The Basilica of St. Castor in Koblenz is constructed.
• The oldest known mention is made of the city of Soest.