King Charles IV succeeds his brother Philippe as King of France.He would reign until 1328. ^[1]

Isabella of France, the wife of King Edward II, travelled to France to see King Charles IV, her brother. Her mission was to bring to an end the disputes over land between France and England. The French King agreed to the English reclaiming the lands of Gascony and Ponthieu as long as Edward came to Paris and paid homage. In Paris Isabella met Roger Mortimer who had recently escaped from the Tower of London. She fell in love with him. ^[2]

Prince Edward met Charles IV and paid him homage. The French king gave the Prince the title of Duke of Aquitaine and informed the English King that the French were going to retain the Agenais, an area of southwest France. Prince Edward had effectively been captured and his mother, Isabella the English Queen, had begun the plans of removing her husband from the throne of England. ^[2]

At a Parliament called to discuss the situation in France, it was decided to send a petition to Isabella for her return to England. She refused. In France, her brother the King had become annoyed with Isabella's conduct. Isabella left France and went to the court of William II, Count of Hainault who assisted her with preparations to invade England. A promise was made to marry Prince Edward, now Duke of Aquitaine to William's daughter Philippa. ^[2]

Charles IV died at the castle at Vincennes. The next rightful claimant to the French throne was not clear-cut as Charles had no male heir. Isabella, the sister of Charles, had married Edward II and their son Edward III had just taken on the rule of England. Isabella put in a claim for her son although in French law it was not possible to inherit the throne through the female line. ^[3]

When Charles IV died he left a wife expecting a child. She gave birth to a daughter so the first cousin of Charles was chosen as the next King of France. He was Philippe of Valois the grandson of Philippe III of France.