a secret for long, was declared void as the English Commonwealth (with which the treaty had been concluded) no longer existed. In 1660, Mary and Amalia tried to persuade several provincial States to designate William as their future stadtholder, but they all initially refused. In 1667, as William III approached the age of 18, the Orangist party again attempted to bring him to power by securing for him the offices of stadtholder and Captain-General. To prevent the restoration of the influence of the House of Orange, De Witt, the leader of the States Party, allowed the pensionary of Haarlem, Gaspar Fagel, to induce the States of Holland to issue the Perpetual Edict. The Edict declared that the Captain-General or Admiral-General of the Netherlands could not serve as stadtholder in any province. Even so, William's supporters sought ways to enhance his prestige and, on 19 September 1668, the States of Zeeland appointed him as First Noble. To receive this honour, William had to escape the attention of his state tutors and travel secretly to Middelburg. A month later, Amalia allowed William to manage his own household and declared him to be of majority age. The province of Holland, the centre of anti-Orangism, abolished the office of stadtholder and four other provinces followed suit in March 1670, establishing the so-called "Harmony". De Witt demanded an oath from each Holland regent (city council member) to uphold the Edict; all but one complied. William saw all this as a defeat, but the arrangement was a compromise: De Witt would have preferred to ignore the prince completely, but now his eventual rise to the office of supreme army commander was implicit. De Witt further conceded that William would be admitted as a member of the Raad van State, the Council of State, then the generality organ administering the defence budget. William was introduced to the council on 31 May 1670 with full voting rights, despite De Witt's attempts to limit his role to that of an advisor. Conflict with republicans In November 1670, William obtained permission to travel to England to urge Charles to pay back at least a part of the 2,797,859 guilder debt the House of Stuart owed the House of Orange. Charles was unable to pay, but William agreed to reduce the amount owed to 1,800,000 guilders. Charles found his nephew to be a dedicated Calvinist and patriotic Dutchman, and reconsidered his