By place edit

Byzantine Empire edit

• March 15 – Emperor Michael III overthrows the regency of his mother Theodora. He appoints his uncle Bardas as the de facto regent and co-ruler of the Byzantine Empire.^[1]

Europe edit

• King Charles the Bald cedes the county of Maine to Erispoe, ruler (duke) of Brittany—this in return for an alliance against the Vikings.
• King Ordoño I of Asturias is said to have begun the repopulation of the town of León in the northwest of Spain (approximate date).

Britain edit

• October 1 – King Æthelwulf of Wessex marries the 12- or 13-year-old Judith, daughter of Charles the Bald, at Verberie (Northern France). She is crowned queen and anointed by Hincmar, archbishop of Reims. The marriage is a diplomatic alliance between Wessex and the West Frankish Kingdom.^[2]
• Winter – Æthelwulf returns to Wessex to face a revolt by his eldest son Æthelbald, who usurps the throne. Æthelwulf agrees to give up the western part of his kingdom, in order to avoid a civil war. He keeps control over Sussex, Surrey, Essex and Kent, over which Prince Æthelberht has presided.^[3]

By topic edit

Geology edit

• November (approximate date) – An earthquake in Corinth, Greece kills an estimated 45,000 people.
• December 3 – Another earthquake strikes the Abbasid Caliphate (modern-day Tunisia), also killing an estimated 45,000 people.
• December 22 – Another earthquake strikes Damghan (modern-day Iran), killing an estimated 200,000 people.

• October 24 – Li Keyong, Shatuo governor (jiedushi) (d. 908)
• Li Maozhen, Chinese warlord and king (d. 924)

• January 7 – Aldric, bishop of Le Mans
• February 4 – Rabanus Maurus, archbishop of Mainz
• August 6 – Fujiwara no Nagara, Japanese statesman (b. 802)
• August 16 – Theutbald I, bishop of Langres
• Florinus of Remüs, Frankish priest and martyr
• Godfrid Haraldsson, Viking chieftain (approximate date)
• Guerin, Frankish nobleman (or 845)
• Ilyas ibn Asad, Muslim emir (approximate date)
• Muhammad I Abu 'l-Abbas, Muslim emir

• Abels, Richard (2002). Morillo, Stephen (ed.). "Royal Succession and the Growth of Political Stability in Ninth-Century Wessex". The Haskins Society Journal: Studies in Medieval History. 12. Woodbridge, UK: Boydell & Brewer: 83–97. doi:10.1017/upo9781846150852.006. ISBN 1-84383-008-6.
• Keynes, Simon (1998). "King Alfred and the Mercians". In Blackburn, Mark A. S.; Dumville, David N. (eds.). Kings, Currency and Alliances: History and Coinage of Southern England in the Ninth Century. Woodbridge, UK: The Boydell Press. pp. 1–45. ISBN 0-85115-598-7.
• Treadgold, Warren (1997). A History of the Byzantine State and Society. Stanford, California: Stanford University Press. ISBN 0-8047-2630-2.