In 1773 there appeared in the _Public Advertiser_ one of Franklin's cleverest hoaxes, "An Edict of the King of Prussia," proclaiming that the island of Britain was a colony of Prussia, having been settled by Angles and Saxons, having been protected by Prussia, having been defended by Prussia against France in the war just past, and never having been definitely freed from Prussia's rule; and that, therefore, Great Britain should now submit to certain taxes laid by Prussia--the taxes being identical with those laid upon the American colonies by Great Britain. In the same year occurred the famous episode of the Hutchinson Letters. These were written by Thomas Hutchinson, Governor of Massachusetts, Andrew Oliver (1706-1774), his lieutenant-governor, and others to William Whately, a member of Parliament, and private secretary to George Grenville, suggesting an increase of the power of the governor at the expense of the assembly, "an abridgement of what are called English liberties," and other measures more extreme than those undertaken by the government. The correspondence was shown to Franklin by a mysterious "member of parliament" to back up the contention that the quartering of troops in Boston was suggested, not by the British ministry, but by Americans and Bostonians. Upon his promise not to publish the letters Franklin received permission to send them to Massachusetts, where they were much passed about and were printed, and they were soon republished in English newspapers. The Massachusetts assembly on receiving the letters resolved to petition the crown for the removal of both Hutchinson and Oliver. The petition was refused and was condemned as scandalous, and Franklin, who took upon himself the responsibility for the publication of the letters, in the hearing before the privy council at the Cockpit on the 29th of January 1774 was insulted and was called a thief by Alexander Wedderburn (the solicitor-general, who appeared for Hutchinson and Oliver), and was removed from his position as head of the post office in the American colonies.