Events of 1370

• May 24 – The Treaty of Stralsund ends the war between Denmark and the Hanseatic League.

• October 20 – Philip of Anjou, Titular Emperor of Constantinople, marries Elisabeth of Slavonia, daughter of Stephen, duke of Transylvania and Slavonia, and Margareta of Bavaria.

• December 20 – Pope Gregory XI succeeds Pope Urban V as the 201st pope.

Undated

• The steel crossbow is first used as a weapon of war.

• Carthusian monks build the Charterhouse in London.

• Xian City (Chang'an) is fortified against invasion.

• Timur completes his conquest of Central Asia and parts of Persia, establishing the Timurid Empire.

• Tran Phu deposes Duong Nhat Le as King of Vietnam.

• For the second time since 1368, Moscow attacks Tver, which again counter-attacks with the aid of Lithuania and the Blue Horde.

• Casimir III of Poland is succeeded jointly by his sister, Elisabeth of Kujavia, and her son, Louis I of Hungary, beginning the rule of Poland by the Capet-Anjou family.

• Siege of Limoges was launched.

Births

• April 11 – Frederick I, Elector of Saxony (d. 1428)

• July 23 – Pier Paolo Vergerio the Elder, humanist (d. 1444/1445)

• date unknown

• * Erasmo of Narni, Italian mercenary (d. 1443)

• * Guarino da Verona, Italian humanist (d. 1460)

• * John VII Palaiologos, Byzantine Emperor (d. 1408)

• * King Olav IV of Norway (d. 1387)

• * Jan Piast, Duke of Ziebice (d. 1428)

• * Jan Sindel, Polish scientist (d. 1443)

• probable

• * Joanna of Navarre, daughter of Charles II of Navarre (d. 1437)

• * John Lydgate, English Benedictine monk and poet (d. 1451)

• * Paulus Vladimiri, Polish scholar (d. 1435)

• * Duke William of Austria (d. 1406)

Deaths

• May 31 – St Vitalis of Assisi (b. 1295)

• November 5 – Casimir III of Poland (b. 1310)

• December 19 – Pope Urban V (b. 1310)

• date unknown

• * Vedanta Desika, Hindu poet (b. 1269)

• * Yang Weizhen, painter (b. c. 1296)

• * Ukhaantu Khan, Emperor Huizong of Yuan, last emperor of the Yuan Dynasty (b. 1320)