Some days after the marriage of the duke of Burgundy, he quitted the duchess and went to Mâcon, where he had a conference with the duke of Savoy, and with ambassadors from the duke of Brittany, the principal of whom was Arthur count de Richemont. While these conferences were holding, Charles de Bourbon count de Clermont, the archbishop of Rheims, the bishop of Puy, and some others, came to Mâcon, by orders of king Charles, who among different matters, treated for a marriage between the count de Clermont and Agnes, sister-german to the duke of Burgundy. Charles de Bourbon promised the said archbishop, on the word of a prince, that he would espouse her at the time that had been fixed. When this, and other great affairs had been discussed and settled, they separated, and each returned to the place he had come from. Philip duke of Burgundy, hearing of the arrival of Humphrey duke of Glocester in Hainault, was very indignant thereat, and issued his summonses to the men at arms, and others accustomed to serve him in war, throughout his countries of Flanders, Artois and his other dominions, which were proclaimed in the usual places, ordering all nobles, and others of every degree, able to bear arms, to prepare themselves to support the duke of Brabant against the duke of Glocester, under the orders of sir John de Luxembourg, the lords de Croy, de l'Isle-Adam, and such other captains as should be commissioned to command and conduct them. In consequence of these proclamations, very many men at arms assembled under the aforesaid lords, who marched them to Philip count de St Pol, brother to duke John of Brabant, he having been appointed by the duke commander in chief in this war against the duke of Glocester. The principal adviser of the count de St Pol was Pierre de Luxembourg count de Conversan, and Braine lord d'Anghien. There were also with him sir Angilbert d'Anghien, le Damoiseau de Vissemale, de Rosbarre, and other great lords and bannerets of the country of Brabant, a multitude of the commonalty, and an infinity of warlike engines. A bitter war now commenced, with fire and sword, throughout Hainault, to the ruin of the poor people, for the duke of Glocester had strongly garrisoned with English all the towns in that country under his obedience; and in like manner had the count de St Pol done to those on the borders, and what remained in Hainault subject to the duke of Brabant. These garrisons made frequent sallies on their enemy's country, and committed every kind of mischief. CHAP. XXVI. THE DUKE OF GLOCESTER SENDS A LETTER TO THE DUKE OF BURGUNDY.--A COPY THEREOF. When the duke of Glocester heard that the duke of Burgundy had issued his summons for men at arms to assemble against him, in support of the duke of Brabant, he was highly displeased, and wrote to the duke of Burgundy a letter, of which the following is an exact copy: