Debauchery of all kinds, murder in all forms, were the daily matter of excitement or of jest to the brilliant circle which revolved around Queen Catherine de' Medici. After ten years' training under the tutelage of the woman whose main instrument of policy was the corruption of her own children, the Queen of Scots, aged fifteen years and five months, was married to the eldest and feeblest of the brood on April 24, 1558. On November 17th, Elizabeth became Queen of England, and the princes of Lorraine--Francis the great Duke of Guise, and his brother the Cardinal--induced their niece and her husband to assume, in addition to the arms of France and Scotland, the arms of a country over which they asserted the right of Mary Stuart to reign as legitimate heiress of Mary Tudor. Civil strife broke out in Scotland between John Knox and the Queen Dowager--between the self-styled "Congregation of the Lord" and the adherents of the Regent, whose French troops repelled the combined forces of the Scotch and their English allies from the beleaguered walls of Leith, little more than a month before the death of their mistress in the castle of Edinburgh, on June 10, 1560. On August 25th Protestantism was proclaimed and Catholicism suppressed in Scotland by a convention of states assembled without the assent of the absent Queen. On December 5th Francis II died; in August, 1561, his widow left France for Scotland, having been refused a safe-conduct by Elizabeth on the ground of her own previous refusal to ratify the treaty made with England by her commissioners in the same month of the preceding year. She arrived nevertheless in safety at Leith, escorted by three of her uncles of the house of Lorraine, and bringing in her train her future biographer, Brantome, and Chastelard, the first of all her voluntary victims. On August 21st she first met the only man able to withstand her; and their first passage of arms left, as he has recorded, upon the mind of John Knox, an ineffaceable impression of her "proud mind, crafty wit, and indurate heart against God and his truth." And yet her acts of concession and conciliation were such as no fanatic on the opposite side could have approved. She assented, not only to the undisturbed maintenance of the new creed, but even to a scheme for the endowment of the Protestant ministry out of the confiscated lands of the Church. Her half-brother, Lord James Stuart, shared the duties of her chief counsellor with William Maitland of Lethington, the keenest and most liberal thinker in the country. By the influence of Lord James, in spite of the earnest opposition of Knox, permission was obtained for her to hear mass celebrated in her private chapel--a license to which, said the reformer, he would have preferred the invasion of ten thousand Frenchmen.