 Charles trusted Isabeau enough by 1402 to allow her to arbitrate the growing dispute between the Orléanists and Burgundians , and he turned control of the treasury over to her . After Philip the Bold died in 1404 and his son John the Fearless became Duke of Burgundy , the new duke continued the political strife in an attempt to gain access to the royal treasury for Burgundian interests . Orléans and the royal dukes thought John was usurping power for his own interests and Isabeau , at that time , aligned herself with Orléans to protect the interests of the crown and her children . Furthermore , she distrusted John the Fearless who she thought overstepped himself in rank — he was cousin to the King whereas Orléans was Charles ' brother . 
