In 1472, the subsequent Duke of Burgundy, Charles the Bold, took up arms against his rival Louis. However, Louis was able to isolate Charles from his English allies by signing the Treaty of Picquigny (1475) with Edward IV of England. The treaty formally ended the Hundred Years' War. With the death of Charles the Bold at the Battle of Nancy in 1477, the dynasty of the dukes of Burgundy died out. Louis took advantage of the situation to seize numerous Burgundian territories, including Burgundy itself and Picardy.