 Shortly after he assumed the title of Dauphin , Charles negotiated a truce with John in Pouilly . Charles then requested a private meeting with John , on 10 September 1419 at a bridge in Montereau , promising his personal guarantee of protection . The meeting , however , was a ploy to assassinate John , whom Charles " hacked to death " on the bridge . His father , King Charles , immediately disinherited his son . The civil war ended after John 's death . The Dauphin 's actions fueled more rumor about his legitimacy , and his disinheritance set the stage for the Treaty of Troyes . 
