The Banu Hilal take Kairouan. The Zirid dynasty has to resettle to Mahdiya.
King Anawrahta of Burma captures Thanton in northern Thailand, strengthening Theravada Buddhism in the country.
August 15 – Battle of Lumphanan: Macbeth, King of Scotland, is killed by the future Malcolm III; Macbeth is succeeded as King of Scotland by his stepson Lulach, who is crowned at Scone, probably on September 8.
August – Battle of Varaville: William the Conqueror defeats a Franco-Angevin army at the mouth of the Dives River, Normandy.
Ferdinand I of Castile takes Lamego and Viseu, from Christian lords allied to the Muslim taifas.
August 2 – Pope Stephen IX (sometimes referred to as Stephen X) succeeds Pope Victor II, as the 154th pope.
Reting Monastery is established by Dromtönpa north of Lhasa, as the seat of the Kadampa lineage.
Hugh I, Duke of Burgundy (d. 1093)
Jōchō, Japanese sculptor
July 28 – Pope Victor II
August 15 – King Macbeth of Scotland (b. 1005)
Late August – Edward the Exile, son of Edmund II of England
Ermesinde of Carcassonne, countess and regent of Barcelona (b. 972)
Leofric, Earl of Mercia
Year 1057 (MLVII) was a common year starting on Wednesday (link will display the full calendar) of the Julian calendar.
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