1054

Year 1054 (MLIV) was a common year starting on Saturday of the Julian calendar.

1054 in various calendars

Gregorian calendar	1054 MLIV
Ab urbe condita	1807
Armenian calendar	503 ԹՎ ՇԳ
Assyrian calendar	5804
Balinese saka calendar	975–976
Bengali calendar	460–461
Berber calendar	2004
English Regnal year	N/A
Buddhist calendar	1598
Burmese calendar	416
Byzantine calendar	6562–6563
Chinese calendar	癸巳年 (Water Snake) 3751 or 3544     — to — 甲午年 (Wood Horse) 3752 or 3545
Coptic calendar	770–771
Discordian calendar	2220
Ethiopian calendar	1046–1047
Hebrew calendar	4814–4815
Hindu calendars
- Vikram Samvat	1110–1111
- Shaka Samvat	975–976
- Kali Yuga	4154–4155
Holocene calendar	11054
Igbo calendar	54–55
Iranian calendar	432–433
Islamic calendar	445–446
Japanese calendar	Tengi 2 (天喜２年)
Javanese calendar	957–958
Julian calendar	1054 MLIV
Korean calendar	3387
Minguo calendar	858 before ROC 民前858年
Nanakshahi calendar	−414
Seleucid era	1365/1366 AG
Thai solar calendar	1596–1597
Tibetan calendar	ཆུ་མོ་སྦྲུལ་ལོ་ (female Water-Snake) 1180 or 799 or 27     — to — ཤིང་ཕོ་རྟ་ལོ་ (male Wood-Horse) 1181 or 800 or 28

King Henry I of France (right) receives a courier from William the Bastard.

Events

East-West schism: the ongoing break of communion between the Roman Catholic and Eastern Orthodox churches.

By place

Byzantine Empire

• Sultan Tughril leads a large Seljuk army out of Azerbaijan into Armenia, possibly to consolidate his frontier, while providing an incentive to his Turkoman allies in the form of plunder. Tughril divides his army into four columns, ordering three to veer off to the north to raid into central and northern Armenia, while he takes the fourth column towards Lake Van. The Seljuk Turks capture and sack the fortress city of Artchesh, after an 8-day siege.^[1]

Europe

• Battle of Mortemer: The Normans, led by Duke William the Conqueror, defeat a French army (near Mortemer), as it is caught pillaging and plundering. King Henry I of France withdraws his main army from the Duchy of Normandy as a result. Guy I, Count of Ponthieu, is captured during the course of the battle.

Scotland

• July 27 – Siward, earl of Northumbria, invades Scotland, to support King Malcolm III against Macbeth, who has usurped the Scottish throne from Malcolm's father, Duncan I. Macbeth is defeated at Dunsinane.

Africa

• The Almoravids retake the trading center of Aoudaghost from the Ghana Empire. Repeated Almoravid incursions, aimed at seizing control of the trans-Saharan gold trade, disrupt Ghana's dominance of the trade routes.^[2]

Asia

• Lý Nhật Tôn, third king of the Lý Dynasty, begins to rule in Vietnam, and changes the country's official name to Đại Việt.

By topic

Astronomy

• July 4 (approx.) – SN 1054, a supernova, is first observed by the Chinese, Arabs and possibly Native Americans, near the star Zeta Tauri.^[3] For 23 days it remains bright enough to be seen in daylight. Its remnants form the Crab Nebula (NGC 1952).^[4]

Religion

• Spring – Pope Leo IX sends a legatine mission, under Cardinal Humbert of Silva Candida, to Constantinople, to negotiate with Patriarch Michael I Cerularius, in response to his actions concerning the church in Constantinople.^[5] Leo becomes the first pope directly to invoke the forged Donation of Constantine, citing a large portion in a letter to Michael, believing it genuine.^[6][7][8]
• July 16 – East-West Schism: Humbert of Silva Candida, representative of the newly deceased Leo IX, breaks the relations between Western and Eastern Churches, through the act of placing an invalidly-issued Papal Bull of excommunication during the celebration of the Divine Liturgy.

Births

• September 2 – Sukjong, ruler of Goryeo (d. 1105)
• Al-Hariri of Basra, Abbasid poet and scholar (d. 1122)
• Bohemond I of Antioch, Italo-Norman nobleman (approximate date)
• George II (Giorgi), king of Georgia (approximate date)
• Judith of Lens, niece of William the Conqueror (or 1055)
• Judith of Swabia, queen consort of Hungary (d. 1105)
• Langri Tangpa, Tibetan Buddhist master (d. 1123)
• Ramon Berenguer II, Count of Barcelona (or 1053)
• Tong Guan, Chinese general and adviser (d. 1126)

Deaths

• February 20 – Yaroslav the Wise, Kievan Rus' grand prince (b. c.978)
• March 8 – Azelin (Azellinus), bishop of Hildesheim
• April 19 – Pope Leo IX, German pontiff of the Catholic Church (b. 1002)
• July 19 – Bernold (Bernulf), bishop of Utrecht
• August 25 – Fujiwara no Michimasa, Japanese nobleman (b. 992)
• August 31 – Kunigunde of Altdorf, German noblewoman (b. c.1020)
• September 1 – Fortún Sánchez, Navarrese nobleman (b. c.992)
• September 15 – García Sánchez III, king of Pamplona (b. c.1012)
• September 24 – Hermann of Reichenau, German music theorist (b. 1013)
• Abu Sahl Zawzani, Persian statesman and chief secretary
• Atiśa, Tibetan Buddhist leader and master (b. c.980)
• Cacht ingen Ragnaill, queen consort of Munster
• Nuño Álvarez de Carazo, Castilian nobleman
• Osbern Pentecost, Norman knight and nobleman
• Osgod Clapa (Osgot), Anglo-Saxon nobleman