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Year 1086 (MLXXXVI) was a common year starting on Thursday (link will display the full calendar) of the Julian calendar.

Events

By place

Europe

• October 23 – Battle of Sagrajas: Spanish forces under King Alfonso VI ("the Brave") of Castile are defeated by the Moors and their allies, the Almoravids, who have been invited to help on orders by Emir Al-Mu'tamid ibn Abbad.
• Norman forces under Count Roger I ("Bosso") conquer Syracuse, the last Muslim stronghold in Sicily.

England

• August 1 – King William the Conqueror calls for a meeting at Old Sarum, where he invites his major vassals and tenants-in-chief to swear allegiance to him. This is known as the Oath of Salisbury.
• The Domesday Book is completed. Drawn up on the orders of William I; it describes in detail the landholdings and resources in England.
• The population in England is estimated to be 1.25 million citizens with 10% living in boroughs.

Seljuk Empire

• Summer – Suleiman ibn Qutulmish, ruler of the Turks in Rum, is killed by Emir Tutush I in the battle of Ain Salm near Antioch. Suleiman's 7-year-old son Kilij Arslan I is captured and transferred as hostage to Isfahan (modern Iran).
• Sultan Malik-Shah I rebuilds the Imam Ali Mosque in Najaf (modern Iraq), after it was destroyed by fire.

By topic

Religion

• May 24 – Pope Victor III succeeds Gregory VII as the 158th pope of the Catholic Church, though he does not accept election until 1087.

Births

• April 24 – Ramiro II ("the Monk"), king of Aragon (d. 1157)
• August 11 – Henry V, Holy Roman Emperor (d. 1125)
• August 20 – Bolesław III Wrymouth, duke of Poland (d. 1138)
• al-Shahrastani, Persian scholar and historian (d. 1153)
• Þorlákur Runólfsson, Icelandic bishop (d. 1133)
• Vicelinus, bishop of Oldenburg in Holstein (d. 1154)
• Zhang Jun, Chinese general and official (d. 1154)

Deaths

• March 15 – Richilde, countess and regent of Flanders
• March 18 – Anselm of Lucca, Italian bishop (b. 1036)
• May 21 – Wang Anshi, Chinese chancellor (b. 1021)
• July 10 – Canute IV ("the Holy"), king of Denmark
• July 14 – Toirdelbach Ua Briain, Irish king (b. 1009)
• July 17 – García Ramírez, Aragonese bishop
• August 8 – Conrad I, count of Luxembourg (b. 1040)
• September 25 – William VIII, duke of Aquitaine
• October 11 – Sima Guang, Chinese politician (b. 1019)
• October 23 – Rodrigo Muñoz, Galician nobleman
• December 25 – Judith of Bohemia, duchess of Poland
• Gregory Pakourianos, Byzantine politician and general, killed in battle
• Huizong, Chinese emperor (Western Xia) (b. 1060)
• Mael Ísu Ua Brolcháin, Irish monk and writer
• Muhammad ibn Ammar, Moorish poet (b. 1031)
• Odo I of Furneaux (or 'Eudes'), French nobleman (b. 1040)
• Suleiman ibn Qutulmish, ruler of the Sultanate of Rum, killed in battle

References

1. Dobson, R. B. (2000). Encyclopedia of the Middle Ages. New York: Routledge. p. 1349. ISBN 1-57958-282-6.
2. W. G. Hoskins. The Making of the English Landscape. London: Hodder & Stoughton, 1955; also Pelican Books, 1970.
3. Basan, Osman Aziz (2010). The Great Seljuqs: A History. Routledge. p. 91. ISBN 978-1136953934.
4. "Henry V | Holy Roman emperor". Encyclopedia Britannica. Retrieved October 21, 2020.

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