House of Valois the senior descendant of Philip IV of France. Charles' character eventually alienated both the French and English monarchs, because he readily switched sides whenever it suited his interest. In 1356, Edward, the Black Prince, eldest son and heir of Edward III, led an army to a chevauchée in France. John pursued the Black Prince, who tried to avoid battling the French king's superior force. Negotiations broke down. In the Battle of Poitiers, the French suffered another humiliating defeat, and their king was captured. Edward hoped to capitalize on the victory by invading France and having himself crowned at Reims. But
Edward the Black Prince French, who were utterly defeated, left eleven thousand dead on the field, of whom 2,426 were men of gentle birth. Nearly a hundred counts, barons, and bannerets and two thousand men-at-arms, besides many others, were made prisoners, and the king and his youngest son, Philip were among those who were taken. The English losses were not large. When King John II was brought to him, the prince received him with respect, helped him to take off his armour, and entertained him and the greater part of the princes and barons who had been made prisoners at supper. He served at