813

This article is about the year 813. For the number, see 813 (number).

Millennium:	1st millennium
Centuries:	8th century – 9th century – 10th century
Decades:	780s  790s  800s  – 810s –  820s  830s  840s
Years:	810 811 812 – 813 – 814 815 816

813 by topic

Politics

State leaders – Sovereign states

Birth and death categories

Births – Deaths

Establishment and disestablishment categories

Establishments – Disestablishments

813 in other calendars

Gregorian calendar	813 DCCCXIII
Ab urbe condita	1566
Armenian calendar	262 ԹՎ ՄԿԲ
Assyrian calendar	5563
Bengali calendar	220
Berber calendar	1763
Buddhist calendar	1357
Burmese calendar	175
Byzantine calendar	6321–6322
Chinese calendar	壬辰年 (Water Dragon) 3509 or 3449     — to — 癸巳年 (Water Snake) 3510 or 3450
Coptic calendar	529–530
Discordian calendar	1979
Ethiopian calendar	805–806
Hebrew calendar	4573–4574
Hindu calendars
- Vikram Samvat	869–870
- Shaka Samvat	735–736
- Kali Yuga	3914–3915
Holocene calendar	10813
Iranian calendar	191–192
Islamic calendar	197–198
Japanese calendar	Kōnin 4 (弘仁４年)
Julian calendar	813 DCCCXIII
Korean calendar	3146
Minguo calendar	1099 before ROC 民前1099年
Seleucid era	1124/1125 AG
Thai solar calendar	1355–1356

File:Versinikia.png

Battle of Versinikia near Edirne (Turkey)

Year 813 (DCCCXIII) was a common year starting on Saturday (link will display the full calendar) of the Julian calendar.

"813" may also refer to a pair of novels by Maurice Leblanc, starring his gentleman thief Arsène Lupin.

Events

By place

Byzantine Empire

• June 22 – Battle of Versinikia: The Bulgars led by Krum, ruler (khan) of the Bulgarian Empire, defeat emperor Michael I near Edirne (modern Turkey). The Byzantine army (26,000 men) is destroyed by a counter-attack of Bulgarian heavy cavalry while trapped in the valley. Krum captures the Byzantine camp and a rich prize including gold and weaponry.
• July 11 – Michael I, under threat by conspiracies, abdicates in favor of his general Leo the Armenian and becomes a monk (under the name Athanasius). His sons are castrated to prevent them succeeding the Byzantine throne, and relegated into monasteries. One of them, Niketas (renamed Ignatius), eventually becoming a patriarch of Constantinople.
• July 17 – Krum reaches Constantinople and sets his camp outside the walls. He is given an invitation, and a promise of safe conduct to meet Leo V. Krum sets out unarmed for the capital with only a small escort, but is ambushed and manages to escape. After this unsuccessful Byzantine murder attempt, the Bulgars ravage much of Eastern Thrace.
• Autumn – Siege of Adrianople: Krum captures Adrianople—one of the most important Byzantine fortresses in Thrace—after being attacked with siege engines. The garrison is forced to surrender due to starvation. On order of Krum the population and the surrounding area (numbering about 10,000) is transferred to Bulgarian territory north of the Danube.
• Ashot I ("the Great") becomes the first Georgian Bagratid prince of Iberia under the Byzantine protection.

Europe

• Louis the Pious, king of Aquitaine (and only surviving legitimate son), is crowned co-emperor of the Franks with his father Charlemagne.
• Forces from today's Denmark attack today's Vestfold due to insubordination (approximate date).

Arabian Empire

• Autumn – Siege of Baghdad: Caliph Al-Amin surrenders Baghdad after Tahir ibn Husayn accepts his peace terms, but he is captured and executed. His brother Al-Ma'mun becomes undisputed ruler of the Abbasid Caliphate.
• The Baghdad School of Astronomy is opened by Al-Ma'mun (approximate date).

By topic

Religion

• Third Council of Tours: Priests are ordered to preach in the vernacular (either Vulgar Latin or German).

Births

• Li Shangyin, Chinese official and poet (d. 858)
• Theophilos, emperor of the Byzantine Empire (d. 842)
• Wandelbert, Benedictine monk (approximate date)

Deaths

• ’Abd Allah ibn Wahb, Muslim jurist (b. 743)
• Muhammad ibn Harun al-Amin, Muslim caliph (b. 787)