Seeing the difficulties which stood in the way of all her other suitors, Mary, in the year 1564, began seriously to think of Darnley. A marriage with him would unite, in the person of the heir of such marriage, the rival claims of the Stuarts and the Tudors upon the English succession, failing issue by Elizabeth; and it would give to Scotland a native prince of the old royal line. It was difficult to see what reasonable objections could be made to such an alliance; and that she might at all events have an opportunity of judging for herself, Mary granted the Earl of Lennox permission to return to Scotland, in 1564, after an exile of twenty years, and promised to assist him in reclaiming his hereditary rights. Elizabeth, who was well aware of the ultimate views with which this journey was undertaken, and had certainly no desire to forward their accomplishment, made nevertheless no opposition to it. With her usual sagacity, she calculated that much discord and jealousy would arise, out of the Earl's suit, in favour of his son. She knew that the House of Hamilton, whose claims upon the Scottish crown were publicly recognised, looked upon the Lennox family as its worst enemies; and that the haughty nobility of Scotland would ill brook to see a stripling elevated above the heads of all of them. Besides, the principal estates of Lennox now lay in England; and in the words of Robertson, "she hoped by this pledge to keep the negotiation entirely in her own hands, and to play the same game of artifice and delay which she had planned out, if her recommendation of Leicester had been more favourably received." In the Parliament which assembled towards the end of the year 1564, Lennox was restored to his estates and honours. Such of his possessions as had passed into the hands of the Earl of Argyle, were surrendered with extreme reluctance; and the Duke of Chatelherault, dreading the marriage with Darnley, continued obstinate in his hatred. The Earl of Murray too, aware that this new connection would be a fatal blow to his influence, set his face against it from the first. Maitland, on the contrary, who felt that he had been hitherto kept too much under by the prime minister, did not anticipate with any regret the decline of his ascendancy. The Secretary, and most of the other members of the Privy Council, were assiduously courted by Lennox. He made presents both to the Queen and them of valuable jewels; but to Murray, whose enmity he knew, he gave nothing.[82] That Murray's weight in the government, however, had not yet decreased, is apparent, from his procuring an enactment, to gratify the Protestants, in the parliament of this year, making the attending of mass, except in the Queen's chapel, punishable with loss of goods, lands, and life: and the Archbishop of St Andrews having infringed this act, was imprisoned, in spite of Mary's intercession, for some months.