1243

Events

• June 25 - Pope Innocent IV succeeds Pope Celestine IV as the 180th pope.
• June 26 - Battle of Köse Dag: The Mongols defeat the Seljuk Turks of Rum.
• Castile captures the city of Murcia from the Moors.
• The city of Brno is founded.

Births

• June 28 - Emperor Go-Fukakusa of Japan (d. 1304)
• September 2 - Gilbert de Clare, 7th Earl of Hertford, English politician (d. 1295)
• James II of Majorca (d. 1311)
• Valdemar I of Sweden (d. 1302)

Deaths

• January - Richard Mor de Burgh
• May 12 - Hubert de Burgh, 1st Earl of Kent

Rulers

• Aragon - James I, King of Aragon and count of Barcelona (reigned from 1213 to 1276)
• Castile - Ferdinand III, the Saint King of Castile and Leon (reigned from 1217 to 1252)af:1243

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