Edward continued to use this title until the Treaty of Brétigny on 8 May 1360, when he abandoned his claims in return for substantial lands in France. After the resumption of hostilities between the English and the French in 1369, Edward resumed his claim and the title of King of France. His successors also used the title until the Treaty of Troyes on 21 May 1420, in which the English recognised Charles VI as King of France, but with his new son-in-law King Henry V of England as his heir (disinheriting Charles VI's son, the Dauphin Charles). Henry V then adopted the title Heir of France instead.