Events

Europe

• March 4 – Mongol invasion of Rus – Battle of the Sit River: The Mongol Hordes of Batu Khan defeat the Rus' under Yuri Vsevolodovich of Vladimir-Suzdal.

• August 21 – Battle of Örlygsstaðir: Sighvatur Sturluson and Sturla Sighvatsson defeat Kolbeinn ungi Arnorsson and Gissur Thorvaldsson for control of Iceland.

• September 28 – James I of Aragon captures the city of Valencia from the Moors, who retreat to Granada.

• The seat of the patriarchate of Aquileia is transferred to Udine.

• Simon de Montfort marries Eleanor, sister of Henry III of England.

• The Mongols seize Moscow, at the time a small town.

• Peterborough Cathedral is consecrated.

• Founder of the Nasrid dynasty, Mohammed I ibn Nasr, begins Alhambra complex on the site of a pre-Islamic fortress.

Asia

• The Khmers are expelled from Luang Phrabang in Laos.

• The Sukhothai kingdom is founded in Thailand.

Births

• Nizamuddin Auliya, Indian Sufi saint (d. 1325)

• Theobald V of Champagne (approximate date; d. 1270)

• Frederick III, Duke of Lorraine (d. 1302)

• Meinhard II of Gorizia-Tyrol (d. 1295)

• Shri Madhvacharya, Vaishnavite saint and founder of the Dvaita School (d. 1317)

• Henry de Montfort, son of Simon de Montfort, 6th Earl of Leicester (d. 1265)

• Magnus Lagabøte, king of Norway (d. 1280)

Deaths

• March 4

• *Joan of England, Queen consort of Scotland, wife of Alexander II of Scotland (b. 1210)

• *Prince Yuri Vsevolodovich of Vladimir-Suzdalia (b. 1189)

• March 19 – Henry I the Bearded, Duke of Lower Silesia (b. c.1165)

• June 9 – Peter des Roches, bishop of Winchester

• date unknown

• *Al-Kamil, Ayyubid sultan of Egypt

• *Hugh le Despenser I, English nobleman