1221

Events

 * - End of the reign of ,
 * briefly reigns over
 * leads an unsuccessful against the
 * ascends to the throne of
 * January - Army under  captures the city of  (now ), and massacres the inhabitants, reported by contemporary scholars as being over a million killed, although probably only a fifth or a tenth of that in reality.
 * February - sacked by the  under  at the orders of . Contemporary scholars report over a million people were systematically killed in the aftermath.
 * Revolt against rulers of by  of the
 * City was founded.
 * A large and highly efficient army, despatched under  by  to  defeats two Georgian armies around, but lacks the will or equipment to besiege the city.
 * enters the.

Births

 * -, Italian chronicler
 * - King (died )
 * , Italian theologian and saint (died )
 * , Duke of Greater Poland (died )

Deaths

 * -, Spanish founder of the Dominicans (born )
 * -, Count of Ponthieu (born )
 * -, Duchess of Brittany (born )