866

1619

315
ԹՎ ՅԺԵ

5616

787–788

273

1816

1410

228

6374–6375

乙酉年 (Wood Rooster)
3563 or 3356
    — to —
丙戌年 (Fire Dog)
3564 or 3357

582–583

2032

858–859

4626–4627

922–923

787–788

3966–3967

10866

244–245

251–252

Jōgan8
(貞観8年)

763–764

866
DCCCLXVI

3199

1046 before ROC
民前1046年

−602

1177/1178 AG

1408–1409

阴木鸡年
(female Wood-Rooster)
992 or 611 or −161
    — to —
阳火狗年
(male Fire-Dog)
993 or 612 or −160

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

Events[edit]

By place[edit]

Byzantine Empire[edit]

• April 21 – Bardas, the regent of the Byzantine Empire, is murdered by Basil the MacedonianatMiletus, 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[edit]

• May 27 – King Ordoño I, ruler of the Kingdom of Asturias, dies after a 16-year reign. He is succeeded by his son, Alfonso III, who later is referred to as "Alfonso the Great".
• July 2 – Battle of Brissarthe: Frankish forces, led by Robert the Strong, are defeated by a joint Breton-Viking army.
• Louis II, Holy Roman Emperor, defeats the Saracen invaders who are ravaging southern Italy.

Britain[edit]

• 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.^[1]

Abbasid Caliphate[edit]

• 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.^[2]
• The Kharijite revolt against the Abbasid Caliphate begins in Al-Jazira (Upper Mesopotamia), which will last for 30 years.

Japan[edit]

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

By topic[edit]

Religion[edit]

• 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 orders that all Catholics should abstain from eating the "flesh, blood, or marrow"^[3] of warm-blooded animals on Wednesdays and Fridays.^[4]
• Pope Nicholas I forbids the use of torture in prosecutions for witchcraft (approximate date).

Births[edit]

• June 10 – Uda, emperor of Japan (d. 931)
• 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)
• Yao Yi, chancellor of Later Tang (d. 940)

Deaths[edit]

• 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
• Yahya ibn Yahya, Idrisid emir of Morocco^[5]

References[edit]