Europe

• Arnulf of Carinthia
  Arnulf of Carinthia
  Arnulf of Carinthia was the Carolingian King of East Francia from 887, the disputed King of Italy from 894 and the disputed Holy Roman Emperor from February 22, 896 until his death.-Birth and Illegitimacy:...
  
   defeats the Normans
  Normans
  The Normans were the people who gave their name to Normandy, a region in northern France. They were descended from Norse Viking conquerors of the territory and the native population of Frankish and Gallo-Roman stock...
  
   at the Battle of Leuven
  Battle of Leuven
  The Battle of Leuven was fought in September 891 between the Franks and the Vikings, essentially ending the Viking invasions in the Low countries. The existence of this battle is known due to the Annales Fuldenses.-The battle:...
  
  .
• April – Duke Guy of Spoleto
  Guy III of Spoleto
  Guy of Spoleto , sometimes known by the Italian version of his name, Guido, or by the German version, Wido, was the Margrave of Camerino from 880 and then Duke of Spoleto and Camerino from 883. He was crowned King of Italy in 889 and Holy Roman Emperor in 891...
  
   is crowned Roman Emperor
  Roman Emperor
  The Roman emperor was the ruler of the Roman State during the imperial period . The Romans had no single term for the office although at any given time, a given title was associated with the emperor...
  
  .
• The forces of Abdullah ibn Muhammad, Emir of Córdoba, defeat those of the rebel Umar ibn Hafsun
  Umar ibn Hafsun
  `Umar ibn Hafsun ibn Ja'far ibn Salim , known in Spanish history as Omar ben Hafsun, was a 9th century Christian leader of anti-Ummayad dynasty forces in southern Iberia.-Ancestry:...
  
   at Poley
  Poley
  Poley may refer to:*Poley, a town in Andalucia, Spain during the Moorish suzerainty, now called Aguilar de la Frontera*Poley, Germany a municipality in Saxony-Anhalt, Germany*Ted Poley , rock singer and drummer...
  
   in southern Spain.

Religion

• October 6 – Pope Formosus
  Pope Formosus
  Pope Formosus was Pope of the Catholic Church from 891 to 896. His brief reign as Pope was troubled, and his remains were exhumed and put on trial in the notorious Cadaver Synod.-Biography:...
  
   succeeds Pope Stephen V
  Pope Stephen V
  Pope Stephen V was pope from 885 to 891. He succeeded Pope Adrian III, and was in turn succeeded by Pope Formosus. In his dealings with Constantinople in the matter of Photius, as also in his relations with the young Slavonic church, he pursued the policy of Pope Nicholas I.His father, Hadrian, who...
  
   as the 111th pope
  Pope
  The Pope is the Bishop of Rome, a position that makes him the leader of the worldwide Catholic Church . In the Catholic Church, the Pope is regarded as the successor of Saint Peter, the Apostle...
  
  .

Deaths

• February 6 – Photius, Patriarch of Constantinople
  Patriarch of Constantinople
  The Ecumenical Patriarch is the Archbishop of Constantinople – New Rome – ranking as primus inter pares in the Eastern Orthodox communion, which is seen by followers as the One, Holy, Catholic, and Apostolic Church....
  
  
• February 25 – Fujiwara no Mototsune
  Fujiwara no Mototsune
  , also known as Horikawa Daijin, was a statesman, courtier and politician during the Nara period.Mototsune continued the trend begun by Yoshifusa of monopolizing the position of regent to the Japanese emperor. He was third son of Fujiwara no Nagayoshi, brother of Yoshifusa, and Fujiwara no Otoharu...
  
  , Japanese regent
• September 14 – Pope Stephen V
  Pope Stephen V
  Pope Stephen V was pope from 885 to 891. He succeeded Pope Adrian III, and was in turn succeeded by Pope Formosus. In his dealings with Constantinople in the matter of Photius, as also in his relations with the young Slavonic church, he pursued the policy of Pope Nicholas I.His father, Hadrian, who...