1213

1213 (MCCXIII) was a common year starting on Tuesday of the Julian calendar, the 1213th year of the Common Era (CE) and Anno Domini (AD) designations, the 213th year of the 2nd millennium, the 13th year of the 13th century, and the 4th year of the 1210s decade. As of the start of 1213, the Gregorian calendar was 7 days ahead of the Julian calendar, which was the dominant calendar of the time.

Millennium:	2nd millennium
Centuries:	12th century – 13th century – 14th century
Decades:	1180s  1190s  1200s  – 1210s –  1220s  1230s  1240s
Years:	1210 1211 1212 – 1213 – 1214 1215 1216

Events

• May 30 – Battle of Damme; English fleet under William Longsword destroyes a French fleet off the Belgian port in the first major victory for the fledgling Royal Navy.
• September 12 – Battle of Muret; The Toulousain and Aragonese forces of Raymond VI of Toulouse and Peter II of Aragon defeated by the Albigensian Crusade under Simon de Montfort
• Jin China is overrun by Mongols under Genghis Khan, who plunder the countryside and cities, until only Beijing remained free, despite two bloody palace coups and a lengthy siege.
• Pope Innocent III issues a charter, calling for the Fifth Crusade to recapture Jerusalem.

Births

• March 9 – Hugh IV, Duke of Burgundy, French crusader (died 1271)
• June 10 – Fakhruddin 'Iraqi, Persian philosopher and Sufi mystic

Deaths

• September 12 – King Peter II of Aragon (killed in battle) (born 1174)
• September 24 – Gertrude of Merania, wife of Andrew II of Hungary (murdered) (born 1185)
• October 10 – Frederick II, Duke of Lorraine
• Dowsprunk, Grand Prince of Lithuania
• Geoffrey Fitz Peter, 1st Earl of Essex
• Sharafeddin Tusi, Persian mathematician (born 1135)