 The allied forces conquered large sections of France.In 1420 the queen of France, Isabeau of Bavaria, signed the Treaty of Troyes, which granted the succession of the French throne to Henry V and his heirs instead of her son Charles.This agreement revived suspicions that the Dauphin was the illegitimate product of Isabeau's rumored affair with the late duke of Orléans rather than the son of King Charles VI.