March 9 – Battle of Klokotnitsa: Byzantine forces under Theodore Komnenos (Doukas) invade Bulgaria, breaking the peace treaty with Tsar Ivan Asen II. Theodore gathers a large army, including western mercenaries. The two armies meet near the village of Klokotnitsa. Ivan applies clever tactics and manages to surround the Byzantines. They are completely defeated, only a small force under Theodore's brother Manuel Doukas manages to escape the battlefield. Theodore is taken prisoner and is blinded. In the aftermath, Ivan quickly extends its control over most of Theodore's domains in Thrace, Macedonia and Albania. The Latin Duchy of Philippopolis and the independent principality of Alexius Slav are also captured and annexed into Bulgaria.[1]
Europe
King Alfonso IX defeats Ibn Hud al-Yamani (known as Almogàver by the Christians). This success opens the road to Badajoz to the Leonese troops.[2] The Portuguese king Sancho II continues his offensive southward and takes Beja, Juromenha, Serpa and Moura.[3]
Frederick II bestows on the Teutonic Order a special privilege for the conquest of Prussia, including Chełmno Land, with papal sovereignty. He allows the Teutonic Knights to forcibly convert the Prussians to Christianity.
September 24 – Alfonso IX dies after a 42-year reign and is succeeded by his son Ferdinand III. He receives the Kingdom of León, in return for compensation in cash and lands for his half-sisters Sancha and Dulce.
Siege of Galway: Norman forces under Richard Mór de Burgh invade Connacht and desolate a large portion of the country. He besieges Galway, but is forced to retreat after a week-long inconclusive battle.
England
April 30 – King Henry III embarks from Portsmouth with a large expeditionary force. On May 2, he arrives at Guernsey, and the next day the English army lands at Saint-Malo, where Peter I (or de Dreux), duke of Brittany, meets Henry to pay him homage. During the months, the English forces march through the County of Anjou, taking the castle of Mirebeau in late July.[5]
October 27 – Henry III signs a truce with King Louis IX (the Saint) and returns to Portsmouth. He leaves a small force under Peter I and Ranulf de Blondeville, to act against the French in Brittany and Normandy.
^Picard, Christophe (2000). Le Portugal musulman (VIIIe-XIIIe siècle. L'Occident d'al-Andalus sous domination islamique. Paris: Maisonneuve & Larose. p. 110. ISBN2-7068-1398-9.
^Hywel Williams (2005). Cassell's Chronology of World History, p. 138. ISBN0-304-35730-8.
^Carpenter, David (2004). The Struggle for Mastery: The Penguin History of Britain 1066–1284, p. 130. London, UK: Penguin. ISBN978-0-14-014824-4.
^Carmina Burana. Die Lieder der Benediktbeurer Handschrift. Zweisprachige Ausgabe, hg. u. übers. v. Carl Fischer und Hugo Kuhn, dtv, München 1991; wenn man dagegen z. B. CB 211 und 211a jeweils als zwei Lieder zählt, kommt man auf insgesamt 315 Texte in der Sammlung, so auch Dieter Schaller, Carmina Burana, in: Lexikon des Mittelalters, Bd. 2, Artemis Verlag, München und Zürich 1983, Sp. 1513
