830
Year 830 was a common year starting on Saturday of the Julian calendar.Events
By place
Britain
- King Wiglaf of Mercia regains control from Wessex, and returns to the throne.
- June 5 - Emperor Theophilos, 16, marries the Armenian noblewoman Theodora, in the Hagia Sophia at Constantinople. He chooses her during a representation of a bride-show; she becomes empress of the Byzantine Empire.
- Byzantine–Arab War: Muslim reinforcements from Ifriqiya and Al-Andalus defeat Byzantine forces under Theodotus in Sicily, but a plague once again compels them to retreat to Mazara del Vallo, and evacuate to North Africa.
Europe
- Emperor Louis the Pious returns from a campaign in Brittany, and is captured by his son Pepin I, king of Aquitaine. He is put under house arrest at Compiegne, and his wife Judith is incarcerated at Poitiers.
North Africa
- The Ad-dimnah Hospital is created in Kairouan, by the Aghlabid emir Ziyadat Allah I.
By topic
Religion
Births
- Adalard, Frankish nobleman
- Athanasius I, bishop of Naples
- Carloman of Bavaria, Frankish king
- Charles, Frankish bishop
- Engelberga, Frankish empress
- Irmgard, Frankish abbess
- Ishaq ibn Hunayn, Muslim physician
- Junayd of Baghdad, Muslim Sufi
- Kōkō, emperor of Japan
- Lambert III, Frankish nobleman
- Naum of Preslav, Bulgarian writer
- Robert the Strong, Frankish nobleman
- Rimbert, Frankish archbishop
- Rurik, prince of Novgorod
- Wulgrin I, Frankish count
- Yahya ibn Mu'adh al-Razi, Muslim Sufi
- Yunju Daoying, Chinese Buddhist teacher
Deaths
- Æthelwold, bishop of Lichfield
- Ashot I, prince of Iberia
- Eardwulf, king of Northumbria
- Egfrid, bishop of Lindisfarne
- Li Jiang, chancellor of the Tang Dynasty
- Sa'id ibn Aws al-Ansari, Muslim linguist
- Wang Jian, Chinese poet
- Zhang Ji, Chinese scholar and poet
