The plan of operations was that a Commission should be appointed, before whom the Scots lords should answer for their rebellion; obviously they would defend themselves on the ground of Mary's guilt of which they professed to hold ample proof in the casket of letters, which if genuine were assuredly damning. On the other hand, Maitland and others of the lords must have suspected at least that evidence of their own complicity in Darnley's murder would be forthcoming. The English Protestants were convinced beforehand of Mary's guilt; they were too much interested in preventing her succession to the English throne to form an unbiased judgment; whereas her condemnation would have been a serious blow to the Catholic party, which included professing Protestants like Norfolk. Altogether, what Elizabeth desired was a compromise between Mary and the Scots lords, by which both should assent to her restoration as queen with Murray as actual ruler, coupled with the confirmation of the unratified Treaty of Edinburgh, and the establishment of the Anglican form of worship as Elizabeth's price. Her real difficulty perhaps was that she did not want Mary cleared to the world by the definite withdrawal of the charge of murder; she wanted the charge to be made and to be left indefinitely not-proven. [Sidenote: Oct. Proceedings at York] The commission--Norfolk, Sussex, and Sadler, who had spent many years in Scotland as ambassador--was to sit at York in October. Thither came the Scots lords. Murray was prepared to rely upon the general charges of misgovernment, while privately submitting the evidence as to the murder to the Commissioners. Norfolk was staggered by the letters, and very nearly threw up a scheme which the Catholic party had been hatching for his own marriage with Mary. But Elizabeth's sudden discovery that this scheme existed filled her with alarm, and for the moment she cancelled the Commission. [Sidenote: Doubts of Philip's attitude] For the course of events on the Continent was making the outlook more complicated. The initial success of the Netherlanders had been very soon followed by the crushing disaster of Jemmingen, and the country seemed to be under Alva's heel. Catholicism in its most militant and merciless form was predominant; what if Philip, irritated by the practically open piracy of English ships in the Channel and elsewhere, should espouse the cause of Mary? De Silva, the ambassador whose relations with the English court were highly satisfactory, was replaced by the less diplomatic and more aggressive Don Guerau de Espes. The English envoy in Spain was so unguarded in his own religious professions as to give Philip fair ground for handing him his passports. If the English Catholics, irritated by the growth of Calvinism and the increased vigilance of Protestantism in England, founded new hopes on these signs of a changing attitude in Philip, their present loyalty might very soon alter its colour with Mary Stewart in England.