The new bishop, William of Conflans (1287-1295) could recover neither, and in 1290 had to formally recognize the position of Savoy (which was thus legalized) in his own cathedral city.
Maintained collections at Conflans, Tournelles and in Paris, and Louis XI.
On the 28th of September he made a truce with Charles the Bold, and in October the treaties of Conflans and Saint Maur-les-Fosses, ended the war.
He only let him depart when he had sworn in the treaty of Pronne to fulfil the engagements made at Conflans and Saint-Maur to assist in person at the subjugation of rebellious Liege, an.d to give Champagne as an appanage to his ally the duke of Berry.
Promised him by the treaty of Conflans, was obliged to sign the peace of Senlis (1472).
He succeeded, however, in forcing upon Louis the treaty of Conflans (1466), by which the king restored to him the towns on the Somme, and promised him the hand of his infant daughter Catherine, with Champagne as dowry.
Alarmed by these early successes of the duke of Burgundy, and anxious to settle various questions relating to the execution of the treaty of Conflans, Louis requested a meeting with Charles and placed himself in his hands at Peronne.
He forced his way into the dauphin's palace (February 1358), and Charles's servant, Jean de Conflans, marshal of Champagne, and Robert de Clermont, marshal of Normandy, were murdered before his eyes.