1086
year

Year 1086 (MLXXXVI) was a common year starting on Thursday 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.
Siege of Syracuse (1086) – 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).
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This entry incorporates text from “1086” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.