sentences:  At one point after becoming Dauphin, he led an army against the English dressed in the red, white, and blue that represented his family; his heraldic device was a mailed fist clutching a naked sword.However, in July 1421, upon learning that Henry V was preparing from Mantes to attack with a much larger army, he withdrew from the siege of Chartres in order to avoid defeat.He then went south of the Loire River under the protection of Yolande of Aragon, known as "Queen of the Four Kingdoms" and, on 22 April 1422, married her daughter, Marie of Anjou, to whom he had been engaged since December 1413 in a ceremony at the Louvre Palace.