1157

Births 
 September 8 – King Richard I of England (died 1199)
 Leopold V of Austria (died 1194)
 Hojo Masako, wife of Minamoto no Yoritomo (died 1225)

 Deaths 
 May 15—Yury Dolgoruky, Russian prince (b. c. 1099)
 August 21—King Alfonso VII of Castile (b. 1105)
 Agnes of Babenberg, daughter of Leopold III of Austria (b. 1111)
 Eystein II of Norway, king of Norway, (b. c. 1125)
 Sweyn III of Denmark, king of Denmark (b. c. 1125)

 Events 
 June 11 Albert I of Brandenburg, also called, The Bear (Ger: Albrecht der Bär), became the founder of the Margraviate of Brandenburg, Germany and the first Margrave
 23 October — Battle of Grathe Heath. A civil war in Denmark ended with the death of king Sweyn III. Valdemar I became king of all Denmark and restored and rebuild the country.