822
# 822

Year 822 (DCCCXXII) was a common year starting on Wednesday (link will display the full calendar) of the Julian calendar.

## Events

### By place

**Byzantine Empire**

* Byzantine general and usurper Thomas the Slav continues his revolt against Emperor Michael II. He unsuccessfully besieges Constantinople, while his fleet is destroyed by Michael's fleet, using Greek fire.
* Battle of Kedouktos (near Heraclea): Khan Omurtag of Bulgaria sends a relief army, and defeats the Byzantine rebels.

**Europe**

* Emperor Louis I performs public penance for causing his nephew Bernard's death 4 years earlier, at his palace of Attigny (Ardennes), before Pope Paschal I, and the Frankish nobles (this to restore harmony and re-establish his authority).
* The earliest known mention of the Serbs, in Einhard's Royal Frankish Annals.

**Britain**

* King Ceolwulf I of Mercia invades Powys (Wales), but is beaten back by King Cyngen. However, Ceolwulf does destroy the fortress of Deganwy, and later takes the kingdom under his control (approximate date).

**Al-Andalus**

* Al-Hakam I, Umayyad emir of Córdoba, dies after a 26-year reign. He is succeeded by his son Abd al-Rahman II, who begins a military campaign against King Alfonso II of Asturias in Al-Andalus (modern Spain).

**Asia**

* Kim Heon-chang launches a short-lived rebellion in Silla, which gains control over much of the southern and western Korean Peninsula.

**Central America**

* February 6 – Ukit Took becomes the last ruler (ajaw) of the Mayan city-state Copán (modern Guatemala). After his death in 830, the kingdom is wiped out, most likely from an epidemic.

### By topic

**Religion**

* Rabanus Maurus, a Frankish Benedictine monk, becomes abbot of Fulda, after the death of Eigil.

## Births

* Al-Mutawakkil, Muslim caliph (d. 861)
* Ibn Abi Asim, Muslim Sunni scholar (or 821)
* Minamoto no Tōru, Japanese poet (d. 895)
* Xuefeng Yicun, Chinese Chan master (d. 908)

## Deaths

* June 26 – Saichō, Japanese Buddhist monk (b. 767)
* Al-Hakam I, Muslim emir of Córdoba (b. 771)
* Al-Waqidi, Muslim historian and biographer
* Denebeorht, bishop of Worcester
* Eigil of Fulda, Bavarian abbot
* Gregory Pterotos, Byzantine general (strategos)
* Kim Heon-chang, Silla aristocrat and rebel leader
* Li Yijian, chancellor of the Tang Dynasty (b. 756)
* Tahir ibn Husayn, founder of the Tahirid Dynasty
* Tian Bu, general of the Tang Dynasty (b. 785)
* Winiges, duke of Spoleto (Italy)
