836

• 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.

• 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.Bush, Robin (1994). Somerset: The complete guide. Wimborne, Dorset: Dovecote Press, pp. 55–56. {{ISBN|1-874336-26-1}}.

• 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 (khan) 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 (until 864).
• The oldest known mention is made of the city of Soest (modern Germany).

• The Basilica of St. Castor in Koblenz (Rhineland-Pfalz) is constructed.

• Æthelberht, king of Wessex (approximate date)
• Al-Musta'in, Muslim caliph (d. 866)
• Fujiwara no Mototsune, Japanese regent (d. 891)
• Ibn al-Rumi, Muslim poet (d. 896)
• Luo Hongxin, Chinese warlord (d. 898)
• Mihira Bhoja, king of the Gurjara-Pratihara Dynasty (d. 885)
• Wei Zhuang, Chinese poet (approximate date)

• March 17 – Haito, bishop of Basel
• Adalram, archbishop of Salzburg
• Aznar Sánchez, duke of Gascony
• Herefrith, bishop of Winchester
• Heungdeok, king of Silla (b. 777)
• Lambert I, Frankish nobleman
• Malamir, ruler of the Bulgarian Empire
• Matfrid, Frankish nobleman
• Muhammad ibn Idris, Idrisid emir of Morocco{{EI2 | last = Eustache | first = D. | title = Idrīsids | volume = 3 | pages = 1035–1037 | doi =10.1163/1573-3912_islam_SIM_3495}}
• Nicetas the Patrician, Byzantine official
• Prosigoj, Serbian prince (approximate date)
• Ralpacan, emperor of Tibet (b. 802)
• Wala of Corbie, Frankish nobleman
• Wang Zhixing, general of the Tang Dynasty (b. 758)

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