1037

• Spring – A revolt in northern Italy is started by Archbishop Aribert of Milan. King Henry III (eldest son of Emperor Conrad II) travels south of the Alps to quell it.
• February – At an Imperial Diet in Pavia (assembled by Conrad II), Aribert is accused of fomenting a revolt against the Holy Roman Empire, Conrad orders his arrest.
• May – Conrad II, with Pavian assistance, lays siege to Milan at the Porta Romana side, but the city holds out. In Rome, Pope Benedict IX deposes Aribert as archbishop.
• May 28 – Conrad II decrees the Constitutio de Feudis which protects the rights of the valvassores (knights and burghers of the cities) in Lombardia (modern Italy).
• Summer – A Byzantine expeditionary force under George Maniakes lands at Sicily, and defeats the Zirids. Maniakes begins his campaign to reconquer the island.
• September 4 – Battle of Tamarón: Ferdinand I defeats and kills his brother-in-law Bermudo III. Ferdinand becomes the king of Castile and León (modern Spain).{{cite book|last1=Parker|first1=Philip|title=World History|date=2010|publisher=Dorling Kindersley Limited|isbn=9781405352574|page=[https://archive.org/details/World_History_Eyewitness_Companions_Philip_Parker/page/n431 430]|url=https://archive.org/details/World_History_Eyewitness_Companions_Philip_Parker|language=en}}
• November 15 – Battle of Bar-le-Duc: Odo II, Count of Blois and Champagne, while invading the Duchy of Lorraine dies in battle with forces loyal to Gothelo I.

• King Harold I seizes the throne of England from his half-brother Harthacnut. His mother, Emma of Normandy, flees to Bruges in Flanders (modern Belgium).{{cite book|last1=Panton|first1=James|title=Historical Dictionary of the British Monarchy|date=2011|publisher=Scarecrow Press|isbn=9780810874978|page=16|url=https://books.google.com/books?id=BiyyueBTpaMC&pg=PR16|language=en}}

• The Chinese rime dictionary of the Jiyun is published during the Song Dynasty.

• The Great Seljuk Empire is established by Tugrul Bey.

• January 8 – Su Dongpo, Chinese calligrapher (d. 1101)
• Beatrice I, German abbess of Quedlinburg (d. 1061)
• Hawise, duchess of Brittany (approximate date)

• September 4 – Bermudo III (or Vermudo), king of León
• November 15 – Odo II, French nobleman (b. 983)
• Abu'l-Hasan Mihyar al-Daylami, Persian poet
• Abu Mansur al-Baghdadi, Persian Shafi'i scholar
• Baba Kuhi of Shiraz, Persian Sufi mystic (b. 948)
• Avicenna, Persian physician and polymath (b. 980)
• Boleslaus III (the Red), duke of Bohemia
• Ding Wei, grand chancellor of the Song Dynasty
• Farrukhi Sistani, Persian poet (or 1038)
• John of Debar, Bulgarian clergyman and bishop
• Muhammad al-Baghdadi, Persian mathematician
• Muirgeas ua Cú Ceanainn, king of Uí Díarmata
• Robert II, French prelate and archbishop
• Siegfried II, German nobleman (b. 956)
• William III (Taillefer), French nobleman

{{Reflist}}

{{DEFAULTSORT:1037}}