Events

• August 1 - Arthur of Brittany captured in Mirebeau , north of Poitiers
• Beginning of the Fourth Crusade.
• The chronicle of Roger of Wendover is of original value as of this year.
• Founding of the Livonian Brothers of the Sword
• Leonardo Fibonacci invents zero
• First jesters in European courts

Births

Deaths

• March 8 - Sverre I of Norway

Heads of states

• England - John, King of England (reigned 1199 - 1216).
• France - Philippe II, Auguste King of France (reigned from 1180 to 1223).