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Byzantine Empire

• June 23 - Arab–Byzantine wars: A prisoner exchange occurs at the border between the Byzantine Empire and the Emirate of Aleppo at Samosata, headed by Emperor Nikephoros II and Sayf al-Dawla, the Emir of Aleppo. The Emirate receives 3,000 captured prisoners from the region of Cilicia, after its conquest by the Byzantine Emperor, as well as the poet Abu Firas al-Hamdani, who has previously been held prisoner by the Byzantines.

Europe

• Spring - King Lothair of France marries Princess Emma of Italy. Lothair strengthens his ties with the Holy Roman Empire. He temporarily remains in control of the cities of Arras and Douai. The latter becomes a flourishing textile market centre during the Middle Ages.
• April 14 - Mieszko I, first duke and prince of Poland, is baptized a Christian, which is usually considered the foundation of the Polish state. Mieszko's baptism, under the influence of his wife Doubravka of Bohemia, brings his territories into the community of Christian countries. The lands ruled by Mieszko cover about 250,000 km², and are inhabited by about 1.2 million people around this time.
• May - Pietro IV Candiano, doge of Venice, remarries to Waldrada of Tuscany, a daughter of Hubert, Duke of Spoleto, and a relative of Otto the Great. Waldrada brings him a large dowry, including the possessions of Ferrara, Friuli and Treviso.
• Fall - Otto the Great, Holy Roman Emperor, departs for a third expedition in Italy and fights in Lombardy against the partisans under Adalbert II of Ivrea. In November an imperial counter-coup in Rome takes control of Castel Sant'Angelo.
• Winter - Otto enters Rome and has the twelve principal militia leaders hanged. Other plotters of the coup are either executed or blinded. Otto is declared 'liberator of the Church'.
• The Hungarians invade the Bulgarian Empire and force Peter I, emperor of the Bulgarians, to conclude a peace treaty with them. He lets them cross to attack the Byzantine Empire.

Asia

• February 9 - Ono no Michikaze, Japanese calligrapher, dies after having established the foundations of the 'Waystyle' of calligraphy while serving the imperial court at Heian-kyō.

By topic

Religion

• John VII, patriarch of Jerusalem, is burned at the stake by a Muslim mob after writing to Emperor Nikephoros II, pleading him to intervene in Palestine and retake it from the Fatimid Caliphate.
• Re-foundation of Peterborough Abbey in England as a Benedictine monastery by Bishop Æthelwold of Winchester.

Births

• Ali al-Sulayhi, sultan of Yemen, Tihamah and Mecca
• Fujiwara no Kintō, Japanese poet and bureaucrat
• Fujiwara no Michinaga, Japanese nobleman
• Hisham II, caliph of Córdoba
• Approximate date
• Ding Wei, grand chancellor of the Song dynasty
• Gerberga of Burgundy, duchess of Swabia
• Heonjeong, queen of Goryeo
• Kenneth III, king of Scotland
• Louis V, king of the West Frankish Kingdom
• Lu Zongdao, Chinese official
• Sei Shōnagon, Japanese poet and court lady

Deaths

• January 19 - Fujiwara no Asatada, Japanese nobleman
• January - Abu'l-Hasan Ali ibn al-Ikhshid, Ikhshidid governor
• February 9 - Ono no Michikaze, Japanese calligrapher
• March 28 - Flodoard, Frankish canon and chronicler
• c. May? - Rashiq al-Nasimi, Hamdanid governor
• August 4 - Berengar II, margrave and king of Italy
• November 12 - Abu Ishaq Ibrahim of Ghazna, Samanid governor
• December 19 - Sancho I, king of León
• Bagrat II, prince of Tao-Klarjeti
• Bertha of Swabia, Frankish queen consort
• Cormac ua Cillín, abbot of Tuamgraney
• John VII, patriarch of Jerusalem, martyredApproximate date
• Nako, Obotrite prince
• Viśa' Saṃbhava, king of Khotan
• Sergius I, duke of Amalfi