Europe

• Saint Swithun becomes Bishop of Winchester, England.
• Boris I Michael succeeds the duumvirate of Malamir and Presian as monarch of Bulgaria
  Bulgaria
  Bulgaria , officially the Republic of Bulgaria , is a parliamentary democracy within a unitary constitutional republic in Southeast Europe. The country borders Romania to the north, Serbia and Macedonia to the west, Greece and Turkey to the south, as well as the Black Sea to the east...
  
  .
• Duke Trpimir I
  Trpimir I of Croatia
  Trpimir I was a duke of Croatia in 845–864, and the founder of the Croatian House of Trpimirović. Although he was formally vassal of the Frankish Emperor Lothair I, Trpimir used Frankish-Byzantine conflicts to rule on his own.-Reign:...
  
  , successor to prince Mislav
  Mislav of Croatia
  Mislav was the Duke of Littoral Croatia in 835–845.Mislav succeeded Vladislav as the Duke of Littoral Croatia. He ruled from Klis in central Dalmatia, when he made Klis Fortress seat to his throne. Mislav was pious ruler. He built the Church of Saint George in Putalj . Today's Kaštel Sućurac...
  
   and founder of the Trpimirović dynasty
  Trpimirovic dynasty
  Trpimirović dynasty was a native Croat dynasty that ruled, with interruptions, from 845 until 1091 in Croatia and was named after Trpimir I, the first member and the founder...
  
   issues the first exact date state document among all Slavonic peoples. In this Latin document duke Trpimir refers to himself as the duke of Croats
  Croats
  Croats are a South Slavic ethnic group mostly living in Croatia, Bosnia and Herzegovina and nearby countries. There are around 4 million Croats living inside Croatia and up to 4.5 million throughout the rest of the world. Responding to political, social and economic pressure, many Croats have...
  
   (dux Chroatorum) and to his country as the state of the Croats (regnum Chroatorum).

Births

• October 21 – Taizu of Later Liang, powerful Chinese jiedushi
  Jiedushi
  The Jiedushi were regional military governors in China during the Tang Dynasty and the Five Dynasties and Ten Kingdoms Period. Originally set up to counter external threats, the jiedushi were given enormous power, including the ability to maintain their own armies, collect taxes, and pass their...
  
   who overthrew the Tang Dynasty
  Tang Dynasty
  The Tang Dynasty was an imperial dynasty of China preceded by the Sui Dynasty and followed by the Five Dynasties and Ten Kingdoms Period. It was founded by the Li family, who seized power during the decline and collapse of the Sui Empire...
  
   (d. 912
  912
  Year 912 was a leap year starting on Wednesday of the Julian calendar.-Africa:* Second rebellion of the Kutama tribesmen against the Fatimid Caliphate in two years.- Europe :...
  
  )
• Qian Liu
  Qian Liu
  Qian Liu , courtesy name Jumei , nickname Poliu , formally King Wusu of Wuyue with the temple name of Taizu , was founder and first king of the Kingdom of Wuyue during the Five Dynasties and Ten Kingdoms Period, ruling over roughly modern Zhejiang on the east coast of China.- Background :Qian...
  
  
• Ma Yin
  Ma Yin
  Ma Yin , courtesy name Batu , formally King Wumu of Chu , was a warlord late in the Chinese dynasty Tang Dynasty who became the first ruler of the Five Dynasties and Ten Kingdoms Period state Chu and the only one who carried the title of "king." He initially took control of the Changsha region in...
  
  
• Yang Xingmi
  Yang Xingmi
  Yang Xingmi , né Yang Xingmin , courtesy name Huayuan , formally Prince Wuzhong of Wu , later posthumously honored King Xiaowu of Wu then Emperor Wu of Wu with the temple name of Taizu , was a military governor of...
  
  

Deaths

• Abd-ar-rahman II, ruler of Spain (b. 788
  788
  Year 788 was a leap year starting on Tuesday of the Julian calendar. The denomination 788 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.- Europe :* Charlemagne conquers Bavaria.* Bermudo I...
  
  )
• Du Mu
  Du Mu
  Du Mu was a leading Chinese poet of the late Tang Dynasty. His courtesy name was Muzhi , and sobriquet Fanchuan .He was born in Chang'an into an elite family whose fortunes were declining...
  
  , Chinese poet and official (b. 803
  803
  Year 803 was a common year starting on Sunday of the Julian calendar.- Europe :* Nicephorus I of the Byzantine Empire and Charlemagne of the Holy Roman Empire settle their imperial boundaries and sign Pax Nicephori.* Venice is recognized as independent by the Byzantine Empire.* Stiftskeller St...
  
  )