Editing John II of France (section)

===Negotiations and falling out with Navarre===
[[File:John the Good king of Fra ordering the arrest of Charles the Bad king of Navarre.jpg|right|thumb|upright=1.2|Arrest of [[Charles II of Navarre|Charles of Navarre]] at Rouen in 1356 (''[[Froissart's Chronicles|Chroniques de Froissart]]'', Loyset Liedet, [[Bibliothèque nationale de France|BnF]], Manuscrit français 2 643 fº 197v).]]
In 1354, John's son-in-law and cousin, [[Charles II of Navarre]], who, in addition to his [[Kingdom of Navarre]] in the [[Pyrenees|Pyrenees mountains]], bordering between France and Spain, also held extensive lands in Normandy, was implicated in the assassination of the [[Constable of France]], [[Charles de la Cerda]], who was the favorite of King John. Nevertheless, in order to have a strategic ally against the English in [[Gascony]], John signed the [[Treaty of Mantes]] with Charles on 22 February 1354. The peace did not last between the two, and Charles eventually struck up an alliance with [[Henry of Grosmont, 1st Duke of Lancaster|Henry of Grosmont]], the first [[Duke of Lancaster]].

The following year, on 10 September 1355 John and Charles signed the [[Treaty of Valognes]], but this second peace lasted hardly any longer than the first, culminating in a highly dramatic event where, during a banquet on 5 April 1356 at the [[Rouen Castle|Royal Castle]] in [[Rouen]] attended by the King's son [[Charles V of France|Charles]], Charles II of Navarre, and a number of Norman magnates and notables of the French king burst through the door in full armor, swords in hand, along with his entourage, which included the king's brother [[Philip of Valois, Duke of Orleans|Phillip]], younger son [[Louis I of Anjou|Louis]] and cousins, as well as over a hundred fully armed knights waiting outside. John lunged over and grabbed Charles of Navarre shouting, "let no one move if he does not want to be dead with this sword." With John's son, [[Dauphin of France|Dauphin]] Charles, the banquet host, on his knees pleading for him to stop, the King grabbed Navarre by the throat and pulled him out of his chair yelling in his face, "Traitor, you are not worthy to sit at my son's table!"<ref>{{cite book |last1=Autrand |first1=Françoise |title=Charles V : le Sage |date=1994 |publisher=Fayard |location=Paris |isbn=2-213-02769-2 |page=909}}</ref> He then ordered the arrests of all the guests including Navarre and, in what many considered to be a rash move as well as a political mistake, he had John, the [[Count of Harcourt]] and several other Norman lords and notables summarily executed later that night in a yard nearby while he stood watching.<ref>{{cite book |last1=Borel d’Hauterive |first1=André |title=Notice Historique de la Noblesse |page=391 |edition=Tome 2}}</ref>

This act, which was largely driven by revenge for Charles of Navarre's and John of Harcourt's pre-meditated plot that killed John's favorite, Charles de La Cerda, would push much of what remaining support the King had from the lords in Normandy away to King Edward and the English camp, setting the stage for the English invasion and the resulting [[Battle of Poitiers]] in the months to come.{{Citation needed|date=July 2024}}