The abbot had made a show of opposing these works, asserting with reason that the abbey was not at war with the Duke of Burgundy, and did not refuse its customary homage. But Baron Guy, as an old crusader, was a casuist of the first order, and, relying on the letter of the charter, maintained that the lord of Roche-Pont was fighting for the cause of his suzerain, and that consequently he must be faithful to the stipulations respecting the abbey. These debates did not stop the workmen; and although the abbot had sent for his vassals with a view to guard the monastery, they were in no hurry to obey his summons, believing that they were not in a condition to resist Anseric's vassals, and preferring to await the result of what was being done before taking any side.

The baron also had a trench dug from the south-east angle of the abbey wall to the eastern ridge of the plateau; then he had the trench covered with timbers and faggots, and the turf replaced above it, so as to leave no external sign of its existence. Outside the barbican of the castle and the ditch was raised a strong palisade which protected its circumference, leaving between it and the wall a space of twenty paces, and which gave lists thirty paces wide in front of the counterscarp of the ditch.

The twenty-second day after Anseric's answer (the 5th of May), the duke's troops appeared on the plateau before the abbey. The first comers spread themselves in the town, and were beginning to plunder it, when the duke interposed, and, contrary to his wont, gave orders that the inhabitants and their property should be respected. Listening to wise counsels for once, he was intending to separate the interests of Anseric's vassals from those of their lord, to isolate the latter, and thus subdue him more easily. So that very evening he issued a proclamation by sound of trumpet through the whole town, to the effect that he was attacking the lord of Roche-Pont only, who had been declared a felon for having broken his fealty to the Duke of Burgundy; that the inhabitants of the town and of the valley would be respected as long as they did not take part with the lord of Roche-Pont; that from this day forwards they were free of all dues and services towards the said lord; but that those who should be convicted of taking part with him should be hanged as traitors to their lawful lord, the Duke of Burgundy. A herald presented himself before the walls of the abbey, and in a loud voice uttered the same proclamation.[See [Fig. 35].] But the baron had foreseen this contingency, and all the townsmen who had come in arms at Anseric's summons were shut up in the castle. He had appointed for the defence of the abbey, only men on whom he could rely—men who were directly dependent on Anseric, and attached to his fortunes—with some of those adventurers whose services were enlisted in any wars that might arise, and who, having no ties of family or country, used to fight for those who paid them best.

These defenders of the abbey were scarcely more than one hundred resolute men. They received the herald's proclamation with derisive shouts, answering that they knew no other lord but the king of France; and that if it came to hanging, they could play at that game quite as well as the duke's people. During the night two mangonels were mounted opposite the north wall of the monastery, and had soon dismantled the defences; but Anseric's men had retrenched themselves in the building behind that wall; and when the Burgundians advanced with ladders to scale the wall, they received them with a shower of darts, which killed some of the assailants.

Nevertheless, the besiegers mounted the wall and descended into the long narrow court enclosed by the building. There they were exposed to the stones and débris of timber which the defenders threw at them out of the windows. The east court was barricaded, and Anseric, with about twenty men, was guarding the barricades. He defended it bravely for a good hour, and the Burgundians, fighting in a narrow space, sustained some losses. They succeeded, however, in breaking open a door of the building, and rushed into the cloister. There they were still exposed to the darts and stones hurled at them by some of the defenders posted on the north side of the church.

A body of Burgundians began to attack the south-east barricade, outside the enclosure, to take the abbey in the rear. It was there that the baron was posted, with about fifty men. The combat was severe and sanguinary, and before withdrawing, seeing that the defenders were gradually abandoning the abbey, he had the faggots in the trench behind set on fire.

Already Anseric and his men were on the road to the château, and were sheltered by the defences of the barbican. Guy rejoined them, pursued by a large body of Burgundians. But a thick smoke soon began to issue from the trench, and the assailants who were coming up, seeing the ground undermined beneath them, dared not advance. On this Guy and Anseric fell upon those who had ventured within bowshot of the barbican, and killed a good number of them. Excited by the struggle, and exasperated by the resistance they met with, the duke's men entered the various buildings of the abbey, killing the wounded, and plundering. Fire, kindled by the defenders or the Burgundians, soon reached the cloister and the roof of the church.

The poor monks, assembled in the choir during the struggle, were soon forced to quit this retreat; for burning brands were falling on the pavement through the holes in the vaulted ceiling. It was already night, and many were massacred by the drunken soldiery. Most of them had cowered down trembling in a vaulted chamber on the ground floor. It was there that the duke found them when he entered the burning abbey. The abbot threw himself on his knees; but the irritated duke repulsed him harshly, saying: "Sir abbot, it ill becomes ecclesiastics to fight against their lord; and if I do not have you and your monks hanged, you may thank your habit. Begone, and tell your brethren of your forfeitures!" Vainly did the abbot protest his innocence, and asseverate that if the abbey had been defended, it was against his will; and the duke, whose anger seemed to gather warmth at every word the father spoke, ended by ordering his men to drive out all the monks.

The unhappy fraternity, perishing of hunger, betook themselves to the town, where some kindly-disposed persons took them in; but the duke would not allow this, and proclaimed next day that every inhabitant who should give shelter to a monk should be hanged. Collecting some provisions, therefore, they started for Cluny on foot.

The duke had given orders to extinguish the flames, for he was intending to reside in the abbey during the siege of the castle; but there remained no part of it fit for habitation except the abbot's dwelling, situated north of the church.[See [Fig. 35].]