1311

Events

• March 15 - Battle of Halmyros: The Catalan Company defeats Walter V of Brienne to take control of the Duchy of Athens.
• A committee of 21 English barons draw up a series of ordinances, which substitute ordainers for the King (Edward II) as the effective government of the country.
• Bolingbroke Castle passes to the House of Lancaster.

Births

• June 24 - Philippa of Hainault, queen of Edward III of England (d. 1369)
• August 13 - King Alfonso XI of Castile (d. 1350)
• Peter I, Duke of Bourbon (d. 1356)
• Margaret II, Countess of Hainaut (d. 1356)
• Joan II of Navarre, daughter of King Louis X of France (d. 1349)
• July 1 - Liu Ji, Chinese military strategist, officer, statesman and poet (d. 1375)

Deaths

• March 15 - Walter V of Brienne, Duke of Athens
• Antony Bek, bishop of Durham
• David VIII of Georgia (b. 1273)
• James II of Majorca (b. 1243)
• Bernard Saisset, Occitan bishop of Pamiers (b. 1232)
• Arnold of Villanova, Spanish alchemist and physician (b. 1235)
• Emperor Wuzong of Yuan Chinaaf:1311

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