 Complete the following phrase:  Philip became duke of Burgundy and count of Flanders, Artois and Franche-Comté upon the assassination of John the Fearless, his father, in 1419. Philip accused Charles, the Dauphin of France and Philips brother-in-law, of planning the murder, which took place during a meeting between John and Charles at Montereau. Because of this, he continued to prosecute the 