1037 CE
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. Battle of Tamarón: Ferdinand I defeats and kills his brother-in-law Bermudo III. Ferdinand becomes the king of Castile and León (modern Spain). 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.
Geopolitics & Diplomacy
Conflict & Security
- 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.source
- 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).source
- 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.source
- 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).source
Exploration & Expansion
- Summer – A Byzantine expeditionary force under George Maniakes lands at Sicily, and defeats the Zirids. Maniakes begins his campaign to reconquer the island.source
Religion & Belief
- 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.source
- 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.source
Culture & Society
- The Chinese rime dictionary of the Jiyun is published during the Song Dynasty.source
Births
Deaths
- September 4 – Bermudo III (or Vermudo), king of Leónsource
- November 15 – Odo II, French nobleman (b. 983)source
- Farrukhi Sistani, Persian poet (or 1038)source
- Ding Wei, grand chancellor of the Song Dynastysource
- John of Debar, Bulgarian clergyman and bishopsource
- Baba Kuhi of Shiraz, Persian Sufi mystic (b. 948)source
- Avicenna, Persian physician and polymath (b. 980)source
- Boleslaus III (the Red), duke of Bohemiasource
- Abu Mansur al-Baghdadi, Persian Shafi'i scholarsource
- Robert II, French prelate and archbishopsource
- Muhammad al-Baghdadi, Persian mathematiciansource
- Muirgeas ua Cú Ceanainn, king of Uí Díarmatasource
- William III (Taillefer), French noblemansource
- Abu'l-Hasan Mihyar al-Daylami, Persian poetsource