Then, having his movements free, he suddenly entered Normandy to retake possession of it as a province which, notwithstanding the cession of it just made to his brother, the King of France could not dispense with.

Evreux, Gisors, Gournay, Louviers, and even Rouen fell, without much resistance, again into his power.

The Duke of Berry made a vigorous appeal for support to his late ally, the Duke of Burgundy, in order to remain master of the new duchy which had been conferred upon him under the late treaties.

The Count of Charolais was at that time taking up little by little the government of the Burgundian dominions in the name of his father, the aged Duke Philip, who was ill and near his end; but, by pleading his own engagements, and especially his ever-renewed struggle with his Flemish subjects, the Liegese, the count escaped from the necessity of satisfying the Duke of Berry.
In order to be safe in the direction of Burgundy as well as that of Brittany, Louis had entered into negotiations with Edward IV., King of England, and had made him offers, perhaps even promises, which seemed to trench upon the rights ceded by the treaty of Conflans to the Duke of Burgundy, as to certain districts of Picardy.

The Count of Charolais was informed of it; and in his impetuous wrath he wrote to King Louis, dubbing him simply Sir, instead of giving him, according to the usage between vassal and suzerain, the title of My most dread lord, "May it please you to wit, that some time ago I was apprised of a matter at which I cannot be too much astounded.