891
Year 891 was a common year starting on Friday of the Julian calendar.Events
By place
Europe
- February 21 - Guy III, duke of Spoleto, is crowned Holy Roman Emperor by Pope Stephen V. His son Lambert is proclaimed king of Italy, at the capital of Pavia in Lombardy.
- Summer - Orso, Lombard prince of Benevento, is deposed after the capture of Benevento by the Byzantines. Benevento becomes the capital of the thema of Longobardia.
- Battle of Leuven: Viking raiders on the Dyle River, in modern-day Flanders, suffer a crushing defeat by Frankish forces under King Arnulf of Carinthia.
Arabian Empire
- Muslim forces led by Abdullah ibn Muhammad al-Umawi, Umayyad emir of Córdoba, defeat the rebel leader Umar ibn Hafsun at Poley, in Al-Andalus.
- June 2 - Al-Muwaffaq, an Abbasid prince, dies at the capital of Baghdad. His son Al-Mu'tadid is recognized as regent, and second heir of the Abbasid Caliphate.
Japan
- February 25 - Fujiwara no Mototsune, a Japanese statesman, dies. In his lifetime, he had forced the resignation of Emperor Yōzei and become head of the Fujiwara clan.
By topic
Religion
Births
- Abd al-Rahman III, Umayyad caliph
- Ali ibn Buya, founder of the Buyid Dynasty
- Gao Conghui, prince and ruler of Jingnan
- Lin Ding, Chinese official and chancellor
- Yuan Dezhao, Chinese chancellor
Deaths
- February 25 - Fujiwara no Mototsune, Japanese regent
- June 2 - Al-Muwaffaq, Abbasid prince and regent
- June 25 - Sunderolt, archbishop of Mainz
- September 14 - Stephen V, pope of the Catholic Church
- October 23 - Yazaman al-Khadim, Abbasid emir
- Bernard, illegitimate son of Charles the Fat
- Chen Yan, Chinese warlord and governor
- Enchin, Japanese Buddhist monk
- Gu Yanlang, Chinese warlord and governor
- Isma'il ibn Bulbul, Abbasid official and vizier
- Mutimir of Serbia, ruler of Principality of Serbia
- Wang Hui, chancellor of the Tang Dynasty
