An event that had lately happened gave a new impulse to French action in Scotland. On July 10th Henry II had been accidentally killed in a tournament; and Mary Stuart, the niece of the Guises, was now Queen of France. It was with greater zeal than ever, therefore, that the Guises sought to direct Scottish affairs according to their own interests. In the beginning of August the Protestant lords took a decided step: they sent John Knox to England with instructions that might serve as a basis of a treaty between England and the Congregation. The instructions were that if England would assist them against France, the Congregation would agree to a common league against that country. Knox only went as far as Berwick; but he brought home a letter containing a reply to the Protestant overtures from Elizabeth's secretary, Sir William Cecil. The reply was discouraging; but it contained a practical suggestion, by which, however, the Protestant leaders were either unwilling or unable to profit. If it was money they were in need of, Cecil told them, that need present no difficulty; if they would but do as Henry VIII did with the monasteries, they would have enough money and to spare. The English Queen was, in truth, in a position that demanded the wariest going. Two-thirds of her own subjects were Catholics, and it would be an evil example to set them if she were to assist rebels in another country. Moreover, the treaty of Cateau-Cambrésis, concluded in the previous April, debarred her from hostile demonstration against France. But the peril from French ascendency in Scotland could not be ignored, and by the gradual pressure of events Elizabeth was driven to support a course which in her heart she abhorred. Shortly after Cecil's communication, the veteran diplomatist, Sir Ralph Sadler, came down to Scotland with a commission to effect a secret arrangement with the Protestant leaders, and brought with him three thousand pounds to distribute to the best of his wisdom.
What the Guises meant speedily became apparent. About the middle of August a thousand French soldiers landed at Leith; and, as they were accompanied by their wives and children, the object of their coming could not be misunderstood. If the leaders of the Congregation, therefore, were not to lose all the ground they had lately gained, a time for vigorous action had again come. As had been previously concerted, they met at Stirling on September 10th and took counsel as to their further action. Here they were joined by an ally who, by his rank and his claims, was of the first importance to their cause. This was the Earl of Arran, the eldest son of the Duke of Châtelherault, who, a few months previously, had been forced to flee from France by reason of his Protestant sympathies. The value of the new confederate was soon realized. Passing to Hamilton palace, the insurgent leaders there met the Duke himself, to whom they held out such alluring prospects that he openly identified himself with their cause. During these transactions at Hamilton, alarming news came of the doings of the Regent. It was reported that she was busily engaged in fortifying Leith--a proceeding, the Congregation maintained, in direct violation of the late treaty. Disregarding their protest, she steadily proceeded with the work; and, as she was strengthened by a new contingent of eight hundred French men-at-arms, her position by the middle of autumn was such as to excite alarm alike in Scotland and England. Again there was no arbitrament but by the sword.