1037

Events

Spring - A revolt in northern Italy is started by Archbishop Aribert of Milan. King Henry III travels south of the Alps to quell it.
February - At an Imperial Diet in Pavia, 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 in Lombardia.
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.
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.