The confederates were so encouraged with their successes that they thought of attempting more. A great conference was held at St. Trond in the principality of Liège (July 1566), attended by nearly two thousand members. The leader was Louis of Nassau. They resolved on another deputation to the Regent, and twelve of their number were selected to present their demands. These "Twelve Apostles," as the courtiers contemptuously termed them, declared that the persecution had not been mitigated as promised, and not obscurely threatened that if some remedy were not found they might be forced to invoke foreign assistance. The threat enraged the Regent; but she was helpless; she could only urge that she had already made representations to the King, and had sent two members of Council to inform the King about the condition of the country. It seemed as if some impression had been made on Philip. The Regent received a despatch (July 31st, 1566) saying that he was prepared to withdraw the papal Inquisition from the Netherlands, and that he would grant what toleration was consistent with the maintenance of the Catholic religion; only he would in no way consent to a summoning of the States General. There was great triumphing in the Netherlands at this news. Perhaps every one but the Prince of Orange was more or less deceived by Philip's duplicity. It is only since the archives of Simancas have yielded their secrets that its depth has been known. They reveal that on Aug. 9th he executed a deed in which he declared that the promise of pardon had been won from him by force, and that he did not mean to keep it, and that on Aug. 12th he wrote to the Pope that his declaration to withdraw the Inquisition was a mere blind. William only knew that the King was levying troops, and that he was blaming the great nobles of the Netherlands for the check inflicted upon him by the confederates. Long before Philip's real intentions were unmasked, a series of iconoclastic attacks not only gave the King the pretext he needed, but did more harm to the cause of the Reformation in the Low Countries than all the persecutions under Charles V. and his son. The origin of these tumultuous proceedings is obscure. According to Brandt, who collects information from all sides: