1034

By place

Byzantine Empire

• April 11 - Emperor Romanos III is drowned in his bath, at the urging of his wife Zoë, who marries her chamberlain, and elevates him to the throne of the Byzantine Empire, as Michael IV. Romanos is buried in the Church of St. Mary Peribleptos in Constantinople.

  Europe

• Spring - Emperor Conrad II leads a German military expedition via the Rhone River into Burgundy, while two Italian armies led by Archbishop Aribert and Boniface III head over the Alps and join with Count Humbert I at Great St. Bernard Pass.
• March - Conrad II converges his armies on Lake Lemano and defeats Count Odo II in battle at Geneva. For his assistance, Conrad grants Humbert I with the Burgundian county of Maurienne.
• May - King Mieszko II dies after a 6-year reign and is succeeded by his 17-year-old son Casimir I. A violent revolt spreads throughout Poland.
• King Sancho III of Pamplona captures León, after defeating a string of rivals. His rule now extends from the borders of Galicia in the west to the County of Barcelona in the east.
• Summer - Poland is broken up into regions. Queen Richeza, Casimir I and his sisters Ryksa and Gertruda are driven into exile in Germany.
• November 25 - King Malcolm II dies in battle at Glamis. He is succeeded by Duncan I, son of his eldest daughter, rather than Macbeth, who is possibly another grandson of his.
• In Al-Andalus, benefiting from the weakening of the Muslim central authority, the count of Portugal, Gonçalo Maia, conquers Montemor-o-Velho.
• Franche-Comté becomes subject to the Holy Roman Empire.

  Africa

• A Pisan and Genovese fleet attack Bona on the Maghribi coast. The city is occupied for one year.