1057
Year 1057 was a common year starting on Wednesday of the Julian calendar.
Events
By place
Byzantine Empire
- June 8 - General Isaac Komnenos proclaims himself emperor in Paphlagonia, and starts a civil war against Emperor Michael VI. He advances with a Byzantine expeditionary force towards Constantinople. At the same time, Michael sends an army against the rebels – western regiments and eastern ones – to stop him.
- August 20 - Battle of Hades: Rebel forces under Isaac Komnenos defeat the Byzantines on the plains of Hades. General Katakalon Kekaumenos routs the imperial right flank, and reaches the enemy's camp. He destroys the tents and supplies, which leaves the way open to Constantinople.
- September 1 - A riot in favor of Isaac Komnenos breaks out in Constantinople. Patriarch Michael I convinces Michael VI to abdicate the throne, and Isaac is crowned as emperor of the Byzantine Empire.
Europe
- August 15 - Battle of Lumphanan: Macbeth, King of Scotland is killed by Malcolm. Macbeth is succeeded by his stepson Lulach, who is crowned as king of Scotland at Scone.
- August - Battle of Varaville: Norman forces under William the Conqueror defeat a Franco-Angevin army at the mouth of the Dives. King Henry I of France on campaign in Normandy is forced to retreat his army.
- King Ferdinand I of León takes the cities of Lamego and Viseu from Christian lords allied to the Muslim Taifa of Silves.
Africa
- The Banu Hilal razes Kairouan. The Zirid dynasty has to re-settle to Mahdia.
Asia
- King Anawrahta captures Thaton, the capital of the Thaton Kingdom, strengthening Theravada Buddhism in Burma.
By topic
Religion
- July 28 - Pope Victor II dies after a 15-month pontificate at Arezzo. He is succeeded by Stephen IX as the 154th pope of the Catholic Church.
Births
- Fujiwara no Kenshi, Japanese empress
- Fujiwara no Nakazane, Japanese nobleman
- Hugh, Count of Vermandois, French nobleman
- Hugh I, Duke of Burgundy, French nobleman
- Ibn Tahir of Caesarea, Arab scholar and historian
- Rhygyfarch, Welsh bishop of St. David's
- William II, king of England
Deaths
- April 19 - Edward the Exile, son of Edmund II
- June 1 - Íñigo of Oña, Spanish Benedictine abbot
- June 26 - Otto, margrave of the Nordmark
- July 28 - Victor II, pope of the Catholic Church
- August 15 - Macbeth, king of Scotland
- August 28 - Abe no Yoritoki, Japanese samurai
- August 31 - Michael VI, Byzantine emperor
- September 28 - Otto III, duke of Swabia
- November 7 - Lothair Udo I, German nobleman
- Abul 'Ala Al-Ma'arri, Arabian philosopher
- Ala al-Din Abu'l-Ghana'im Sa'd, Buyid vizier
- Bruno II, margrave of Friesland
- Di Qing, Chinese general
- Heca, bishop of Selsey
- Humphrey of Hauteville, Norman nobleman
- Jōchō Busshi, Japanese sculptor
- Leofric, English earl and peerage
- Ostromir, Russian statesman
- Otto I, Italian nobleman
- Pandulf VI, Italian nobleman
- Ralph the Timid, Norman nobleman
- Reginald I, French nobleman
- William fitz Giroie, Norman nobleman