At this time Peter De Coninck was Dean of the Guild of Weavers, a man of substance, popular and eloquent. There was a tumultuous gathering in the Market-Place, when, standing in front of the Belfry, with the leaders of five-and-twenty guilds around him, he declaimed on liberty, and attacked the magistrates, calling on his fellow-townsmen to resist the taxes. The city officers, on the order of the magistrates, arrested De Coninck and his chief supporters, and hurried them to the prison in the Bourg. But in a few hours the mob forced an entrance and released them. The signal for revolt had been given, and for some months Bruges, like the rest of Flanders, was in disorder. De Coninck, who had been joined by John Breidel, Dean of the Guild of Butchers, was busy rousing the people in all parts of the country. He visited Ghent, amongst other places, and tried to persuade the magistrates that if Ghent and Bruges united their forces the whole Flemish people would rise, crush the Leliarts, and expel the French. But the men of Ghent would not listen to him, and he returned to Bruges. Here, too, he met with a rebuff, for the magistrates, having heard that Jacques de Châtillon, whom Philip had made Governor of Flanders, was marching on the town, would not allow him to remain amongst them. He went to Damme, and with him went, not only Breidel, but 5,000 burghers of the national party, stout Clauwerts, who had devoted themselves to regaining the liberty of their country.
When Châtillon rode up to the walls of Bruges and demanded entrance the magistrates agreed to open the gates, on condition that he brought with him only 300 men-at-arms. But he broke his word, and the town was entered by 2,000 knights, whose haughty looks and threatening language convinced the people that treachery was intended. It was whispered in the Market-Place that the waggons which rumbled over the drawbridges carried ropes with which the Clauwerts who had remained in the town were to be hanged; that there was to be a general massacre, in which not even the women and children would be spared; and that the Frenchmen never unbuckled their swords or took off their armour, but were ready to begin the slaughter at any moment. It was a day of terror in Bruges, and when evening came some of the burghers slipped out, made their way to Damme, and told De Coninck what was passing in the town.