834

By place

Europe

• March 1 - Emperor Louis the Pious is restored as sole ruler of the Frankish Empire. After his re-accession to the throne, his eldest son Lothair I flees to Burgundy.
• Danish Vikings raid the trading settlement of Dorestad, located in the south-east of the province of Utrecht.
• Summer - The Viking ship of Oseberg near Tønsberg is buried in a mound, during the Viking Age.
• The first mention is made of the Jona River in Switzerland.

  Britain

• King Óengus II dies after a 14-year reign. He is succeeded by his nephew Drest IX, as ruler of the Picts.

  By topic

Religion

• July 20 - Ansegisus, Frankish abbot and advisor of former emperor Charlemagne, dies at Fontenelle Abbey in Normandy.