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 female inheritance finally had to be introduced. On the death of Philip IV the Fair's son Louis X in 1316, immediately followed by that of his son John I the Posthumous, it had to be decided whether his young daughter Joan or his brother Philip would succeed to the throne. Philip arranged for his coronation, and became Philip V of France. He was challenged by the supporters of the Princess Joan, daughter of Louis X, on the basis of his right to the throne. In response, he convened an assembly of prelates, barons, and burgesses at Paris, who acknowledged him