|Covid-19|August 10 – Battle of Val-ès-Dunes: William, Duke of Normandy, with assistance from King Henry I of France, secures control of Normandy by defeating rebel Norman barons at Caen.
September 25–28 – Rebel general Leo Tornikios, having proclaimed himself Byzantine emperor, besieges Constantinople. Troops led personally by Emperor Constantine IX Monomachos repel him.
October – Pope Clement II is succeeded by Pope Benedict IX, as the 150th pope.
October 25 – Harald Hardrada becomes sole king of Norway, on the death of his uncle Magnus the Good; the crown of Denmark passes to Sweyn II.
November – The usurping Pope Benedict IX seizes the Lateran Palace in Rome.
Judith of Swabia, daughter of Henry III, Holy Roman Emperor
October 9 – Pope Clement II
October 25 – King Magnus I of Norway (b. 1024)
Year 1047 (MXLVII) was a common year starting on Thursday (link will display the full calendar) of the Julian calendar.
(Text) CC BY-SA