Year 1011 (MXI) was a common year starting on Monday of the Julian calendar.
Events
By place
Europe
June 11 the Byzantine army takes Bari from the rebellious Lombard lord Melus. Danes capture Canterbury, taking Alphege, the Archbishop of Canterbury as a prisoner. Byrhtferth of Ramsey writes his Manual, on the subject of time. The German king Henry II gives Adalbero, Duke of Carinthia the Carinthian duchy, including the rule over the March of Verona (or in 1012). Ermengol II succeeds Ermengol I as Count of Urgell Albert II, Count of Namur succeeds Albert I
Middle East
Baghdad Manifesto: Al-Hakim bi-Amr Allah's fall from Ali ibn Abi Talib is disputed. Ibn al-Haytham (Alhacen), a famous Persian scientist working in Egypt, pretends to be crazy. He is kept under house arrest until 1021. During this time he begins writing his influential Book of Optics. In Georgia, Bagrat III takes away Sumbat III of Klarjeti power.
Eastern Asia
The Chinese Guangyun rime dictionary is compiled under Emperor Zhenzong of Song. Emperor Sanjō gets the throne of Japan.
Births
Eleanor of Normandy, a Norman noblewoman and the daughter of Richard II of Normandy (possible date; d. after 1071) Ralph the Staller, earl of East Anglia (d. 1068) Robert I, Duke of Burgundy (d. 1076) Shao Yong, Song Dynasty philosopher, cosmologist, poet and historian (d. 1077)
Deaths
February 23 Willigis, Archbishop of Mainz and a statesman of the Holy Roman Empire (b. c. 940) November 21 Emperor Reizei of Japan (b. 950) December 12 or December 15 Conrad I, Duke of Carinthia (b. c. 975) Emperor Ichijō of Japan (b. 980) Albert I, Count of Namur (b. c. 950) Armentarius, Galician bishop (b. 983) Sumbat III of Klarjeti, Georgian prince of the Bagratid dynasty of Tao-Klarjeti and the last sovereign of Klarjeti Yohannan V, Patriarch of the Church of the East