Events

• April 17 - Tusculum's destruction by Commune of Rome army.
• May 12 - Richard I of England marries Berengaria of Navarre.
• July 12 - Saladin's garrison surrenders, ending the two-year siege of Acre. Conrad of Montferrat, who has negotiated the surrender, raises the banners of the Kingdom of Jerusalem and of the Third Crusade leaders Richard I of England, Philip II of France, and Leopold V of Austria on the city's walls and towers.
• September 7 - Third Crusade: Battle of Arsuf - Richard I of England defeats Saladin at Arsuf.

Unknown dates

• The monks of Glastonbury Abbey announce that they have found the burial sites of King Arthur and his Queen Guinevere.
• Duke Berthold V of Zähringen founds the city of Berne in today's Switzerland.

Births

• February 8 - Yaroslav II of Russia (d. 1246)

Deaths

• March 20 - Frederick VI, Duke of Swabia (born 1167)
• March 27 - Pope Clement III
• William III of Montferrat, Burgundian crusader

1191

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