8. =The Treaty of Edinburgh. 1560.=--In spite of Cecil's urgency Elizabeth was slow to assist the Scottish rebels. For some months Mary of Guise had been gathering French troops to her support, and she at last had a foreign army at her command powerful enough to make her mistress of Scotland, and to form the nucleus of a larger force which might afterwards be sufficiently powerful to make her mistress of England. This was more than Elizabeth could bear, and in January =1560= she sent her fleet with troops to the help of the Lords of the Congregation. The French retreated into Leith, where they were besieged by the allied forces. In June the Regent died, and in July Leith surrendered. By a treaty signed at Edinburgh the French agreed to leave Scotland, and to acknowledge Elizabeth's title to the English crown. In December Francis II. died, and as his brother, who succeeded him as Charles IX., was too young to govern, his mother, Catherine de Medicis, acted as regent. Catherine was jealous of the Duke of Guise, and also of his niece, Mary Stuart, the widow of her eldest son.[13] Mary, finding no longer a home in France, was driven for refuge to her own unruly realm of Scotland. [Footnote 13: Genealogy of the Guises:-- Claude, Duke of Guise | +------------+-----------+ | | Francis, Duke Mary = James V. of Guise, of Guise, | king of killed at died in | Scotland Dreux, 1563 1560 | | | +------------+--------------+ | | | | | Henry Charles, Louis, Cardinal Mary Stuart, Duke of Guise, Duke of of Guise, Queen of Scots murdered in 1588 Mayenne murdered in 1588]