1054 in history

1054 events chronologically

Jul 4 A supernova is seen by Chinese, Arab and possibly Amerindian observers near the star Zeta Tauri. For several months it remains bright enough to be seen during the day. Its remnants form the Crab Nebula
Jul 16 Three Roman legates break relations between Western and Eastern Christian Churches through the act of placing an invalidly-issued Papal bull of Excommunication on the altar of Hagia Sophia during Saturday afternoon divine liturgy. Historians frequently describe the event as the start of the East–West Schism
Jul 27 Siward, Earl of Northumbria invades Scotland and defeats Macbeth, King of Scotland somewhere north of the Firth of Forth

Died in 1054

Feb 20 Yaroslav the Wise thrice Grand Prince of Novgorod and Kiev, uniting the two principalities for a time under his rule. Yaroslav's Christian name was George after Saint George
Apr 19 Pope Leo IX Pope from 12 February 1049 to his death in 1054. He was a German aristocrat and a powerful secular ruler of central Italy while holding the papacy. He is regarded as a saint by the Roman Catholic Church, his feast day celebrated on 19 April
Jun 19 Lambert II Count of Louvain count of Louvain between 1033 and 1054. Lambert was the son of Lambert I of Louvain
Sep 1 García Sánchez III of Navarre king of Navarre from 1035 to 1054. He was the eldest legitimate son and heir of Sancho the Great, born November 1016, and he succeeded his father to the crown of Navarre, becoming feudal overlord over two of his brothers: Ramiro, who was given lands that would serve as the basis for the kingdom of Aragón; and Gonzalo, who received the counties of Sobrarbe and Ribagorza. Likewise, he had some claim to suzerainty over his brother Ferdinand, who under their father had served as Count of Castile, nominally subject to the Kingdom of León but brought under the personal control of Sancho III
Sep 24 Hermann of Reichenau an 11th-century scholar, composer, music theorist, mathematician, and astronomer. He composed the Marian prayer Alma Redemptoris Mater. He was beatified in 1863