826 CE

Euphemius, Byzantine admiral, organises an uprising in Sicily against Emperor Michael II. He proclaims himself Emperor (with the title of basileus) in Syracuse, independent from Constantinople. In turn, Euphemius is defeated by Byzantine troops (reinforcements from the East), and is driven out to North Africa. King Harald Klak of Denmark receives the Frisian county of Rüstringen, as a gift from Emperor Louis the Pious. Prince Aethelwulf, a son of King Egbert of Wessex, invades Kent, and drives out its pro-Mercian king Baldred.

In the 820s, the 9th century.

Geopolitics & Diplomacy

  • King Harald Klak of Denmark receives the Frisian county of Rüstringen, as a gift from Emperor Louis the Pious.source

Conflict & Security

  • May – Euphemius, Byzantine admiral, organises an uprising in Sicily against Emperor Michael II. He proclaims himself Emperor (with the title of basileus) in Syracuse, independent from Constantinople. In turn, Euphemius is defeated by Byzantine troops (reinforcements from the East), and is driven out to North Africa.source
  • Prince Aethelwulf, a son of King Egbert of Wessex, invades Kent, and drives out its pro-Mercian king Baldred.source

Religion & Belief

  • Harald Klak accepts Christianity, and is baptized with his wife and son Godfrid at Mainz.source

Births

  • January 22 – Montuku, emperor of Japan (died 858)source
  • November 29 – William of Septimania, Frankish nobleman (died 850)source
  • Thābit ibn Qurra, Muslim astronomer and physician (died 901)source
  • Cyril, Byzantine missionary and bishop (died 885)source
  • Doseon, Korean Buddhist monk (died 898)source
  • Al-Mubarrad, Muslim grammarian (died 898)source
  • Ansgarde of Burgundy, Frankish queen (approximate date)source

Deaths

  • Li Guangyan, Chinese general (born 761)source
  • Bai Xingjian, Chinese poet and writer (born 776)source
  • King Beornwulf of Mercia invades East Anglia, but is killed in battle. He is succeeded by Ludeca, as ruler of Mercia.source
  • Ashot Msaker, prince of Armeniasource
  • Li Wu, prince of the Tang Dynastysource
  • Zhu Kerong, Chinese governor (jiedushi)source
  • Theodore the Studite, Byzantine abbot (born 759)source
  • Wu Yantong, Chinese Buddhist monksource
  • Ashot I, prince of Iberia (or 830)source
  • Fujiwara no Fuyutsugu, Japanese general (born 775)source
  • Heondeok, king of Silla (Korea)source