Treaty of London (1358)

The Treaty of London (1358) known as the first Treaty of London (May 1358), was signed during the Hundred Years' War, between the English and French.

Edward III of England's son,  Edward the Black Prince, invaded France from English held Gascony in 1356, winning a victory at the Battle of Poitiers. During the battle, the Gascon noble Jean III de Grailly, captal de Buch, captured the French king, John II, and many of his nobles. At the instigation of the pope, negotiations were opened and resulted in a truce being declared on 13 March 1357. The Black Prince brought John to London where negotiations were reopened and the First treaty of London signed in May 1358.

The truce set John's ransom at four million écus. The treaty was never implemented, largely because the French did not raise the first installment of the ransom. However, negotiations resumed that extended the truce and eventually led to the second treaty of London.