After a time, the severity of Lord Lovat's imprisonment was mitigated. The Castle of Angouleme was, in a manner, an open prison, having an extensive park within its walls, with walks open to the inhabitants; and here, through the influence of Monsieur De Torcy, Lord Lovat was permitted to take exercise. His insinuating manners won upon the inhabitants, and the prison of Angouleme became so agreeable to him, that he was often heard to say, that "if there was a beautiful and enchanting prison in the world, it was the Castle of Angouleme." Meantime, the scheme of invasion was by no means relinquished on the part of the Jacobites, although it had received a considerable check from the treachery of its agents. It is stated by some historians that scarcely had Lord Lovat quitted England, than Sir John Maclean, his cousin-german, and Campbell, of Glendarnel, disclosed the plot to Lord Athole and Lord Tarbat. These noblemen instantly went to Queen Anne, and accused the Duke of Queensbury of high treason, in carrying on a villanous plot with the Court of St. Germains. Queensbury defended himself before the House of Lords, and the accusation, which rested chiefly on the assertions of Ferguson, the famous hatcher of plots, was declared false and scandalous, and Ferguson was committed to Newgate. The reluctance of the Duke of Queensbury to give up the correspondence, excited, however, suspicions of his integrity; which, as Harley, Lord Oxford, expressed it, could only be cleared up by Fraser, Lord Lovat;[188] but Lord Lovat was not then to be found. In all this singular and complicated affair, it is impossible to help wondering at the folly and audacity which Lord Lovat had shown in returning to France, conscious of having placed himself at the mercy of ruthless politicians, and aware that in that country he could expect no redress nor protection from law. But the original crime for which he had been sent forth, an outlaw from his country, was the source of all his subsequent mistakes and misfortunes. France was open to him; Scotland was closed; and England was a scene of peril to one who trod on fragile ice, beneath which a deep gulf yawned. Lord Lovat had been two years in prison before any of his former friends, for even he was not wholly devoid of partisans, interfered with success in his behalf; and it was the good, old-fashioned feeling of kindred that finally moved the Marquis De Frezeliere, or Frezel, or Frezeau de la Frezeliere, to interest himself in the fate of his despised, and perhaps forgotten, relative.