Events

• Batu Khan and the Golden Horde sack the Ruthenian city of Kiev
• Mandinka prince Sundiata Keita defeats Sosso king Soumaoro Kanté at the Battle of Kirina, beginning the Mali Empire.
• July 15 - Russian prince Alexander Nevsky defeats the Swedes in the Battle of the Neva, saving Russia from a full-scale enemy invasion from the North.

Births

• Abulafia, Maltese Jewish philosopher (died 1292)
• Pope Benedict XI (died 1304)
• Stephen V of Hungary (died 1272)
• Sigerus of Brabant, French theologian (died 1284)
• Albert the Degenerate, landgrave of Thuringia (approximate date; died 1314)

Deaths

• April 11 - Llywelyn the Great, King of Gwynedd
• Ibn Arabi, Andalusian Arab philosopher
• Jacques de Vitry, French historian and theologian (born c. 1180)
• William de Warenne, 6th Earl of Surrey (born 1166)

Monarchs/Presidents

• 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)

1240

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