Events

• May 24 - The Fifth Crusade leaves Acre for Egypt.
• Damietta is besieged by the knights of the Fifth Crusade.
• Livonian Brothers of the Sword begin to conquer Estonia.
• Minamoto no Sanetomo becomes Udaijin of Japan.
• Alfonso IX of Castile founds a university in Salamanca.

Ongoing events

• Fifth Crusade (1217-1221)

Births

• February 12 - Kujo Yoritsune, Japanese shogun (died 1256)
• May 1 - John I, Count of Hainaut (died 1257)
• May 1 - Rudolph I of Germany, Holy Roman Emperor (died 1291)
• October 30 - Emperor Chūkyō of Japan (died 1234)
• Abel of Denmark (died 1252)

Deaths

• February 2 - Konstantin of Rostov, Prince of Novgorod (b. 1186)
• June 25 - Simon de Montfort, 5th Earl of Leicester, French crusader (born 1160)
• July 6 - Eudes III, Duke of Burgundy (born 1166)
• December 30 - Richard de Clare, 4th Earl of Hertford, English politician (born 1162)
• Al-Adil I, Egyptian general and ruler (born 1145)
• Hugh I of Cyprus
• Otto IV, Holy Roman Emperor

1218

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