For the moment Mary had, as before mentioned, given up the title of 'Queen of England': but all her thoughts were directed towards the point of getting her presumptive hereditary right to that kingdom recognised, and of preparing for its realisation at a later time.

But now there were two ways by which she might gain her end. She might either get her claim to the English throne recognised by an agreement with its present possessor, which did not appear so unattainable, as Elizabeth was unmarried, and such a settlement would have been legally valid in England; or she might enter into a dynastic alliance with a neighbouring great power, so as to be enabled to carry her claims into effect one day through its military strength.[206]

With this last view negociations were during several years carried on for a marriage with Don Carlos the son of the Spanish King. For in the same proportion that the union of Scotch and French interests dissolved, did the opposite alliance between Spain and England become looser. The most varied reasons made Philip II wish to enter into direct and close relations with Scotland. Immediately after the death of Francis II, a negociation was set on foot with a view to this alliance, on Mary's giving an audience to the Spanish ambassador, to the vexation of Queen Catharine of France, who wished to see this richest of princes, and the one who seemed destined to the greatest power, reserved for her own youngest daughter. After Mary returned to Scotland similar rumours were renewed, and from time to time we meet with a negociation for this object. When her minister Lethington was in London in the spring of 1563, he agreed with the Spanish ambassador that this marriage was the only desirable one: it was longed for by all Scotch and English Catholics. Soon afterwards the ambassador sent a young member of the embassy to Scotland, in the deepest secrecy, by a long circuit through Ireland; not without difficulty he obtained an interview with Mary Stuart, in which he assured himself of her inclination for the marriage. In the autumn of 1563 Catharine Medici showed herself well informed about this negociation and much disquieted by it.[207] It appeared to depend only on Philip's decision whether the marriage was concluded or not.[208] After some time the Scotch Privy Council sent the bishop of Ross to Spain, to bring the matter about. The Queen herself corresponded on it with Cardinal Granvella and the Duchess of Arschot.

Don Carlos was too weak, too morbidly excited, to be married when young. King Philip, who did not wish to feed his ambition, at last gave the plan up, and recommended, instead of his son, his nephew the Archduke Charles of Austria.

But the one was as disagreeable to the English court as the other. Elizabeth had announced eternal enmity to Queen Mary if she married a prince of the house of Austria. Besides, the Spanish influence in England troubled her: she now saw herself already under the necessity of demanding and enforcing the recall of the Spanish ambassador, because he drew the Catholic party round him and incited them to oppose the laws of England. What might have come of it, if a prince of this house should now obtain rule over a part of the island itself?

But while Mary through these secret negociations tried to obtain the support of a great Catholic house for her claims, she neglected nothing that could contribute at the same time to make a good and friendly understanding with Queen Elizabeth possible, and to bring it about. In the company of her half-brother Murray, who held the reins of government with a firm hand, supported by his religious and political friends, she undertook a campaign into the Northern counties (which inclined to Catholicism), to make them submit to the universal law of the land. Only one priest was allowed at court, from whom she heard mass; some of those who read the mass elsewhere were occasionally punished for it; clergymen who complained of the hardship they experienced were referred to Murray. This proceeding too was only temporary, it was intended to incline the Queen of England to her wishes. All quarrel was carefully avoided: on solemn festivals she drank to the English ambassador, to the health of his mistress. Besides, there were negociations for a meeting of the two Queens in person at York, where Mary hoped to be solemnly recognised as presumptive heiress of England.[209] However much it otherwise lies beyond the mental horizon of this epoch of firm and mutually opposed convictions, Mary was then thought capable of willingly adopting the forms of the English Church; to this even the Cardinal of Lorraine had assented. She herself unceasingly declared that she wished to honour Elizabeth as a mother, as an elder sister. But the Queen of England, after all sorts of promises, preparations, and delays, declined the interview. She would hear absolutely nothing of any recognition of the claim of inheritance. With naive plainness she inferred that such a declaration would not lead 'to concord with her sister, the Queen of Scotland,' since naturally a sovereign does not love his heir;—how indeed could that be possible, since every one is wont to make the heir the object of his aim and hopes;—she might increase Mary's importance by the recognition, but at the same time she would undermine her own;—whether Mary had a right to the English throne, she did not know and did not even wish to know: for she was (and as she said this, she pointed to the ring on her finger in proof) married to the people of England; if the Queen of Scotland had a right to the English throne, that should be left to her unimpaired.

And none could deny that such a declaration as Mary required had its hazardous side for Elizabeth. Henry VIII's settlement of the succession, on which Elizabeth's own accession rested, excluded the Scotch line: in virtue of it the descendants of the younger sister, who were natives of England, possessed a greater right. And how if the Queen of Scots, when recognised as heir to England, afterwards gave her hand to a Catholic prince hostile to Elizabeth? The dangers indicated above would then be doubled, the followers of the ancient Church would have attached themselves to the royal couple, and formed a compact party in opposition to Elizabeth's arrangements, which would never have attained stability.

To meet this very objection, it was suggested that Mary might marry a Protestant, in fact Robert Dudley Earl of Leicester, who was looked upon as the favourite of the Queen of England herself. Elizabeth could have been quite secure of him: she herself recommended him. Mary was at the first moment unpleasantly affected by the idea that she was expected to take as a husband one who was a born subject of England; but she was by no means decidedly against it, always supposing that in that case Elizabeth would recognise her right of inheritance in a valid form for herself and her issue by this marriage. Above all men Murray was in favour of this. He said, although his power must be diminished by the Queen's union with Leicester, yet he wished for it, in so far as it was bound up with the confirmation of the heirship; for that was the hope by which he had kept Mary firm to the existing system, and separated her from her old friends all these years past. Such was without doubt the case: it is this point of view that renders Mary's policy and conduct during the last years intelligible. If he, so Murray continued, could not make his promise good, Mary would think he had deceived her: should she afterwards marry a Catholic prince, what would be their position?[210] Once more was the request brought before Queen Elizabeth. But even under these circumstances she could not be induced to grant it. She said, if Mary trusted her and married Leicester, she should never repent it: but these words, which contained no definite engagement, had rather an opposite effect on Mary. In the hope of the recognition of her heirship she had hitherto endured the absolute constraint of her position: she would even have agreed to the choice of a husband by which she feared to be disparaged and controlled: for how could she have concealed from herself, that by it she would have fallen into a permanent dependence on the policy of England? With all her compliances and advances she had nevertheless gained nothing. Her vexation relieved itself by a violent outburst of tears: but during this inward storm she decided at the same time to drop her union with Elizabeth, and thus leave herself free for an opposite policy.

She had refused the Archduke because his possessions were too small to secure her ends, too distant for him to be able to help her. Then another suitor presented himself for her hand, who would not indeed bring her any increase of power, but would strengthen her claims, which seemed to her very desirable. This was the young Henry Lord Darnley, through his mother likewise a descendant of Henry VII's daughter who had married in Scotland, and through his father Matthew Earl of Lennox related to that family of the Stuarts which was descended from Alexander, a younger son of James Stuart the ancestor of the Scotch kings. In his descent there lay a double recommendation for him. It was remarked also that he had in his favour in Scotland itself the numerous and important Stuarts (Lord Athol too belonged to them); but mainly that a scion of this marriage would not find in England any rival of similar claims, which might be easily the case if young Darnley should marry into a family of the English nobility and bring it his rights.[211] Darnley was a youth remarkable for his fine figure, tall and well built; he made a great impression on the Queen at his very first appearance. In July 1565 the marriage was celebrated and Henry Darnley proclaimed King: the heralds named his name first, when they delivered the royal proclamations.

He had hitherto, at least publicly, held to the Protestant faith: even now he occasionally attended the preaching: but after a little wavering he avowed himself a Catholic and drew over a number of lords with him by his example. The Catholic interest thus obtained a complete ascendancy at court.