On This Day

What Happened in 1054

Historical Events in 1054

  • Mar 12 Pope Leo IX escapes captivity & returns to Rome
  • Jul 4 Brightest known supernova SN 1054 (creates the Crab Nebula) 1st reported by Chinese astronomers
  • Jul 16 Michael Caerularius excommunicated of Constantinople
  • Jul 16 Three Roman legates fracture relations between Western and Eastern Christian churches by placing invalid Papal Bull of Excommunication on altar of Hagia Sophia during liturgy. Often dated start of the East-West Schism.
  • Jul 17 Holy Roman Emperor Henry III crowns his son Henry IV king

Famous People Who Died in 1054

  • Feb 20 Yaroslav I, the Wise, ruler (Kiev), dies
  • Apr 19 Pope Leo IX [Bruno, Graf von Egisheim und Dagsburg], Catholic Church's 151st pope (1049-54), dies at 51
  • Jul 19 Bernold[us] Benno/Bernulphus, bishop of Utrecht (1027-54)/saint, dies
  • Sep 24 Hermann of Reichenau [Hermannus Contractus], German Benedictine monk and scholar, dies at 41