862

By place

Central Europe

• King Lothair II of Lotharingia tries to divorce his wife Teutberga, on trumped-up charges of incest. With the support of his brother, Louis II, the bishops give him permission to remarry during a synod at Aachen.
• March - Viking raiders led by Weland are trapped at Trilbardou Bridge, and submit to King Charles the Bald. He and his family accept Christianity before leaving Neustria.
• Robert the Strong, margrave of Neustria, captures 12 Viking ships and kills their crews. He pays tribute for keeping the Vikings out of Neustria.
• Carloman, eldest son of King Louis the German, revolts against his father. He is captured, but manages to escape to the Ostmark.
• First raid of the Hungarians in the Carpathian Basin at the request of Rastislav of Moravia against the East Frankish Kingdom.
• Viking forces sack Cologne.

  Britain

• April 13 - King Donald I of Scotland dies after a 4-year reign. He is succeeded by his nephew Constantine I, as ruler of Scotland.
• Áed Findliath is crowned High King of Ireland, after the death of Máel Sechnaill mac Maíl Ruanaid.

  Eastern Europe

• The Varangians, under the leadership of Rurik, a Viking chieftain, arrive at Staraya Ladoga. He builds a trade settlement near Novgorod, and founds the Rurik Dynasty.
• The first written record is made of the towns of Belozersk and Murom.

  Abbasid Caliphate

• June - Caliph al-Muntasir dies after just a half-year reign. He is succeeded by al-Musta'in, as ruler of the Abbasid Caliphate.
• Ashot I is recognized as the 'Prince of Princes' of Armenia, by the Abbasids.

  China

• Fan Chuo finishes his Manchu, during the Tang Dynasty.

  By topic

Religion

• Constantine the Philosopher invents the 42-letter Slavonic alphabet as a tool for converting the Moravians to Christianity.