Secret as was the pledge, the mere whisper of the match revealed their danger to the Scotch Protestants. The Lords of the Congregation woke with a start from their confidence in the Queen. Murray saw that the policy to which he had held his sister since her arrival in the realm was now to be abandoned. Mary was no longer to be the Catholic ruler of a Protestant country, seeking peaceful acknowledgement of her right of succession to Elizabeth's throne; she had placed herself at the head of the English Catholics, and such a position at once threatened the safety of Protestantism in Scotland itself. If once Elizabeth were overthrown by a Catholic rising, and a Catholic policy established in England, Scotch Protestantism was at an end. At the first rumour of the match therefore Murray drew Argyle and the Hamiltons round him in a band of self-defence, and refused his signature to a paper recommending Darnley as husband to the Queen. But Mary's diplomacy detached from him lord after lord, till his only hope lay in the opposition of Elizabeth. The marriage with Darnley was undoubtedly a danger even more formidable to England than to Scotland. It put an end to the dissensions which had till now broken the strength of the English Catholics. It rallied them round Mary and Darnley as successors to the throne. It gathered to their cause the far greater mass of cautious conservatives who had been detached from Mary by her foreign blood and by dread of her kinship with the Guises. Darnley was reckoned an Englishman, and with an English husband to sway her policy Mary herself seemed to become an Englishwoman. But it was in vain that the Council pronounced the marriage a danger to the realm, that Elizabeth threatened Mary with war, or that she plotted with Murray for the seizure of Mary and the driving Darnley back over the border. Threat and plot were too late to avert the union, and at the close of July 1565, Darnley was married to Mary Stuart and proclaimed king of Scotland. Murray at once called the Lords of the Congregation to arms. But the most powerful and active stood aloof. As heir of the line of Angus, Darnley was by blood the head of the house of Douglas, and, Protestants as they were, the Douglases rallied to their kinsman. Their actual chieftain, the Earl of Morton, stood next to Murray himself in his power over the Congregation; he was chancellor of the realm; and his strength as a great noble was backed by a dark and unscrupulous ability. By waiving their claim to the earldom of Angus and the lands which he held, the Lennoxes won Morton to his kinsman's cause, and the Earl was followed in his course by two of the sternest and most active among the Protestant Lords, Darnley's uncle, Lord Ruthven, and Lord Lindesay, who had married a Douglas. Their desertion broke Murray's strength; and his rising was hardly declared when Mary marched on his little force with pistols in her belt, and drove its leaders over the border.