1059

Events 
 January 24 – Pope Nicholas II takes over for Pope Stephen IX as the 155th Pope. He was placed in opposition to Antipope Benedict X.
 August – Robert Guiscard signs the Treaty of Melfi with Pope Nicholas II.
 Anselm settles at the Benedictine monastery of Le Bec in Normandy.
 The Lateran Council makes the College of Cardinals the sole voters in the election of popes.
 Muhammed ben Da'ud, known as Alp Arslan, becomes second sultan of the Seljuk Turks.
 Peter Krešimir IV is crowned King of Croatia and Dalmatia
 Isaac I Comnenus resigns as Byzantine Emperor, appointing Constantine Ducas as his replacement.

 Births 
 Fulcher of Chartres, chronicler historian of the First Crusade

 Deaths 
 August 30 – Peter Urseolo of Hungary
 Michael Cerularius, Patriarch of Constantinople

 References