Style of the British sovereign using the title in legal documents, he did not formally exchange letters confirming the renunciation with the French King. In 1369 Edward III resumed the title, claiming that the French had breached their treaty. Henry V invaded France, but agreed to the Treaty of Troyes, whereby he was recognised as the Heir and Regent of France, in 1420. He died in 1422, to be succeeded by his infant son, who became Henry VI. Shortly after his accession, Henry VI also inherited the French Throne. By the 1450s, however, England had lost all its territories in France, with the exception of
English claims to the French throne of Aquitaine. However, in 1337, Edward, in his capacity as Duke of Aquitaine, refused to pay homage to Philip. The French king's response was to confiscate what was left of lands in English held Aquitaine, namely Gascony, thus precipitating the Hundred Years' War and Edward's revival of his claim to the throne and title of King of France in 1340. The decision to assume the title of "King of France" was made at the solicitation of his Flemish allies, who had signed a treaty that they would no longer attack the French king. They said that if Edward took the