Historical Events
- Mar 4 Battle of the Sit River: Mongol forces of Batu Khan overcome Russians under Yuri II of Vladimir-Suzdal near Yaroslavl in Russia, ending Russian resistance
Famous Deaths
- Mar 4 Joan of England, Queen consort of Scotland as wife of Alexander II and daughter of King John of England, dies at 27
- Mar 4 Yuri II, Grand Prince of Vladimir, beheaded by his own forces after being caught by Mongolian forces (b. 1189)
- Mar 19 Henry the Bearded, High Duke of Poland (1232-38), dies
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