After the conclusion of this treaty, the duke advanced to Roye, in the Vermandois, and was lodged in the town, having quartered his army in the country round it. He dispatched thence sir Peter des Essars, knight, and his confidential adviser, to the king of France, to his son-in-law the duke of Acquitaine, and to the citizens of Paris, to make them acquainted with the strength of his army, and with his successes. Sir Peter des Essars was honourably received by the duke of Acquitaine and the Parisians; and in compliment to the duke of Burgundy, he was reinstated in his office of provost, in the room of sir Brunelet de Sainct Cler, who, by the royal authority, was appointed bailiff of Senlis, on the dismission of sir Gastelius du Bost, who was suspected of being a favourer of the Orleans-party. When sir Peter des Essars had finished the business he had been sent on to Paris, he set out for Rethel to announce to the count de Nevers, who had assembled a considerable force, the march of the duke, and to desire him to advance to the town of Mondidier, where he would have more certain intelligence of his brother. The count de Nevers, on hearing this, used all diligence to assemble his men, and set off to join the duke. During these transactions, the duke of Orleans, the count d’Armagnac, the constable of France, the master of the cross-bows, with a large body of men at arms and others, came to the town of Melun, where the queen of France and the duke of Berry resided. Having held a conference with the queen and duke, they advanced to La Fertè on the Marne, which belonged to sir Robert de Bar[72], in right of his wife the viscountess de Meaux. They crossed the Marne, and came to Arsy en Mussien, in the county of Valois, dependant on the duke of Orleans, where his brother, the count de Vertus, met him. The count was accompanied by a numerous body of combatants, among whom were the duke of Bourbon, John son to the duke of Bar, sir William de Coucy, Amé de Sallebruche, sir Hugh de Hufalize, with others from the Ardennes, Lorraine and Germany, who, in the whole, amounted to full six thousand knights and esquires, not including armed infantry and bowmen; and this party was henceforward popularly called _Armagnacs_, as I have before observed. Each bore on his armour badges similar to those which they had formerly worn when they lay before Paris. The duke of Orleans marched this army from the Valois, passing by Senlis, toward his county of Beaumont; but Enguerrand de Bournouville, who had been posted in Senlis with a large force of men at arms to guard it, sallied out on their rear, and made a good booty of their baggage as well as prisoners. In doing this, however, he lost some of his men, who were slain or taken, and he then returned to Senlis. The duke of Orleans, with the other princes, were lodged in the castle of Beaumont, and his army in the country surrounding it.