836

Year 836 was a leap year starting on Saturday of the Julian calendar, the 836th year of the Common Era and Anno Domini designations, the 836th year of the 1st millennium, the 36th year of the 9th century, and the 7th year of the 830s decade.

Events

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 the Wessex areas of Somerset and North Devon. Ecgberht, King of Wessex fights them but 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.
The oldest known mention is made of the city of Soest.
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