- Apr 1 Emperor Go-Saga of Japan (d. 1272)
Alexander Nevsky (1220-1263)
May 30 Prince of Novgorod and Grand Prince of Vladimir, considered the key figure in medieval Rus (1252-63), born in Pereslavl-Zalessky, Vladimir-Suzdal (now Russia)
- Nov 11 Alphonse of Toulouse, son of Louis VIII of France, born in Poissy, France (d. 1271)