Years: 1233 1234 1235 - 1236 - 1237 1238 1239

Decades: 1200s 1210s 1220s - 1230s - 1240s 1250s 1260s

Centuries: 12th century - 13th century - 14th century

Events

• May 6 - Roger of Wendover, Benedictine monk and chronicler of St Albans's Abbey dies. His chronicle is continued by Matthew Paris.
• September 22 - Lithuanians and Semigallians beat Livonian Brothers of the Sword in Battle of Siauliai
• Volga Bulgaria is conquered by Mongol khan Batu.
• Córdoba was retaken for Christianity as part of the Reconquista in 1236, and became a centre of activity against the remaining Islamic population.
• Accession of Razia al-Din to the Sultanate of Delhi.

Births

• Wu Tian Xiang , the most renowned Chinese patriot of the Song Dynasty

Deaths

• May 6 - Roger of Wendover, Benedictine monk and chronicler.
• John of Ibelin, the Old Lord of Beirut

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)