Humphrey, Duke of Gloucester, Henry IV's youngest son, was given the position of "Protector and Defender of the Realm and the Church" (Regent of England) until the King was old enough to rule. His job was to keep the peace and deal with Parliament. Henry IV's oldest living son, John, Duke of Bedford, was made the Regent of France. He was in charge of running the war that was happening. Bedford also replaced Gloucester as Regent of England whenever he was in England.