Rahul Sharma (Editor)


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Year 866 (DCCCLXVI) was a common year starting on Tuesday (link will display the full calendar) of the Julian calendar.


Byzantine Empire

  • Spring – Bardas, the regent of the Byzantine Empire, is murdered by Basil the Macedonian at Miletus, while conducting a large-scale expedition against the Saracen stronghold of Crete.
  • May 26 – Basil the Macedonian is crowned co-emperor of the Byzantine Empire, and is adopted by the much younger Michael III.
  • Europe

  • May 27 – King Ordoño I dies after a 16-year reign. He is succeeded by his son Alfonso III ("the Great"), as ruler of Asturias.
  • July 2 – Battle of Brissarthe: Frankish forces, led by Robert the Strong, are defeated by a joint Breton-Viking army.
  • Harald Fairhair wins a decisive battle, in his quest to become king of all of Norway.
  • Louis II, Holy Roman Emperor, defeats the Saracen invaders who are ravaging southern Italy.
  • Britain

  • The Great Heathen Army of the Vikings rides north to Northumbria. The Northumbrians are preoccupied with a civil war, and the Danes enter York unopposed.
  • Abbasid Caliphate

  • October 17 – Caliph al-Musta'in is put to death, after a 4-year reign. He is succeeded by al-Mu'tazz, who becomes the youngest Abbasid caliph to assume power.
  • The Kharijite revolt against the Abbasid Caliphate begins in Al-Jazira (Upper Mesopotamia), which will last for 30 years.
  • Japan

  • Fujiwara no Yoshifusa becomes regent (sesshō) to assist the child emperor Seiwa, starting the Fujiwara regency.
  • Religion

  • Boris I, ruler (knyaz) of the Bulgarian Empire, sends a diplomatic mission, led by the Bulgarian nobleman Peter, to Rome, in an effort to renew ties with the West.
  • Pope Nicholas I forbids the use of torture, in prosecutions for witchcraft (approximate date).
  • Births

  • September 19 – Leo VI, Byzantine emperor (d. 912)
  • Carloman II, king of the West Frankish Kingdom (approximate date)
  • Robert I, king of the West Frankish Kingdom (d. 923)
  • Savaric I, bishop of Mondoñedo (d. 877)
  • Yao Yi, chancellor of Later Tang (d. 940)
  • Deaths

  • April 21 – Bardas, Byzantine chief minister and regent
  • May 27 – Ordoño I, king of Asturias
  • June 21 – Rodulf, Frankish archbishop
  • July 2 – Robert the Strong, Frankish nobleman
  • July 16 – Irmgard, Frankish abbess
  • October 17 – Al-Musta'in, Abbasid caliph
  • Adelaide of Tours, Frankish noblewoman
  • Al-Mu'ayyad, Abbasid prince
  • Charles the Child, king of Aquitaine
  • Eberhard, duke of Friuli
  • Emenon, Frankish nobleman
  • Hungerus Frisus, bishop of Utrecht
  • Linji Yixuan, Chinese monk and founder of the Linji school
  • Liudolf, duke of Saxony
  • Ranulf I, Frankish nobleman (b. 820)
  • Robert, Frankish nobleman (b. 834)
  • Rudolph, Frankish nobleman
  • Wang Shaoyi, general of the Tang Dynasty
  • References

    866 Wikipedia

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