833
Year 833 was a common year starting on Wednesday of the Julian calendar.
Events
By place
Byzantine Empire
- Byzantine-Arab War: Emperor Theophilos signs an armistice for peace with the Abbasid Caliphate. He offers Caliph Al-Ma'mun 100,000 gold dinars, in return for 7,000 Byzantine prisoners.
Europe
- June - Lothair I, eldest son of Emperor Louis the Pious, joins the rebellion of his brothers Pepin I and Louis the German, with the assistance of Archbishop Ebbo. Louis is forced to abdicate, on the plains of Rothfield.
- Mojmir I, Moravian duke, expels Prince Pribina from his homeland. He unifies Great Moravia and becomes the first known ruler of the Moravian Slavs, who founds the House of Mojmir.
- Galindo Aznárez I, Frankish count, usurps the Catalan counties of Pallars and Ribagorza, in the Spanish March, a buffer zone between the Pyrenees and the Ebro River.
Abbasid Caliphate
- August 7 - Caliph Al-Ma'mun dies after a 20-year reign. He is succeeded two days later by his half-brother al-Mu'tasim, as ruler of the Abbasid Caliphate.
- Ibn Hisham, Muslim historian, collects oral traditions that form the basis for the biography of the Islamic prophet Muhammad.
Japan
- Emperor Junna abdicates the throne, after a 10-year reign. He is succeeded by his nephew Nimmyō, as the 54th emperor of Japan.
Births
- Irmgard, Frankish abbess
- Kocel, Slavic prince
- Luo Yin, Chinese statesman and poet
- Yi Zong, emperor of the Tang Dynasty
Deaths
- May 7 - Ibn Hisham, Muslim historian
- July 20 or 834 - Ansegisus, Frankish abbot
- August 9 - Al-Ma'mun, Muslim caliph
- Conchobar mac Donnchada, High King of Ireland
- Diarmait mac Tommaltaig, king of Connacht
- Dou Yizhi, Chancellor of the [Tang dynasty|chancellor of the Tang Dynasty]
- Du Yuanying, chancellor of the Tang Dynasty
- Enravota, ruler of the Bulgarian Empire
- García Galíndez, count of Aragon
- Nagabhata II, ruler of the Gurjara-Pratihara Dynasty
- Song Shenxi, chancellor of the Tang Dynasty
- Yuthog Yontan Gonpo, Tibetan high priest