Sir George Saville, Viscount, Earl, and at length Marquis of Halifax, was the prime minister of Charles during the last years of his reign. He was a man of fine genius and lively imagination; but, as a politician, was guided rather by a desire to display the full extent of artful and nice management of parties, than by any steady or consistent principle of his own. He was at the head of the small party called Trimmers, who affected a sort of neutrality between the Whig and Tory factions, and were, of course, suspected and hated by both. He originally made a figure in opposition to the court, particularly upon the great debates concerning the test, which he keenly opposed. He voted at first for the bill of Exclusion; and used the jocular argument against hereditary government, that no man would chuse a man to drive his carriage, merely because his father had been a good coachman. But when that great question came finally to be debated in the House of Lords, on the 15th November, 1680, Halifax had changed his opinion; and he even conducted the opposition to the bill, and displayed an extent of capacity and eloquence, equally astonishing to friends and foes, and which, perhaps, never was surpassed in that assembly. Even Shaftesbury sank before this versatile orator; and there seems little doubt, that his eloquence had a great effect in deciding the issue of that day's famous debate, by which the Exclusion Bill was thrown out for ever. The House of Commons was so much incensed against Halifax, that they voted an address for his removal from the king's councils. The king, however, found his own advantage in the fine and balancing policy of Halifax; and, far from consenting to his disgrace, promoted him to the rank of Marquis, and office of Privy Seal, which was hardly more displeasing to the Whigs than to the Duke of York. To the over-bearing measures of this prince, Halifax was secretly a determined opponent; it was his uniform object to detach Monmouth so far from the violent councils and party of Shaftesbury, that the interest which he still retained in the king's affections might be employed as a counterbalance to that of his brother. He prevailed upon the king to see Monmouth, after the discovery of the Rye-house Plot; and, had the duke then proved more practicable, it is possible, that, backed with the interest of Halifax, he might have regained his place in the king's favour. Upon this occasion, the Duke of York was not consulted, and made open show of his displeasure. Indeed Halifax told Sir John Reresby, that the Duke would never forgive him.[344] It is even said, that, immediately before the death of Charles, there was a scheme in agitation, under the management of Halifax, for recalling Monmouth, sending York to Scotland, calling a parliament, and totally changing the violent measures of the last two years.[345] If so, it was prevented by the king's sudden death, and left Halifax exposed to the resentment of his successor.