Middleton's family and his peerage were Scotch. But he was closely connected with some of the noblest houses of England; he had resided long in England; he had been appointed by Charles the Second one of the English Secretaries of State, and had been entrusted by James with the lead of the English House of Commons. His abilities and acquirements were considerable; his temper was easy and generous; his manners were popular; and his conduct had generally been consistent and honourable. He had, when Popery was in the ascendant, resolutely refused to purchase the royal favour by apostasy. Roman Catholic ecclesiastics had been sent to convert him; and the town had been much amused by the dexterity with which the layman baffled the divines. A priest undertook to demonstrate the doctrine of transubstantiation, and made the approaches in the usual form. "Your Lordship believes in the Trinity." "Who told you so?" said Middleton. "Not believe in the Trinity!" cried the priest in amazement. "Nay," said Middleton; "prove your religion to be true if you can; but do not catechize me about mine." As it was plain that the Secretary was not a disputant whom it was easy to take at an advantage, the controversy ended almost as soon as it began. [429] When fortune changed, Middleton adhered to the cause of hereditary monarchy with a stedfastness which was the more respectable because he would have had no difficulty in making his peace with the new government. His sentiments were so well known that, when the kingdom was agitated by apprehensions of an invasion and an insurrection, he was arrested and sent to the Tower; but no evidence on which he could be convicted of treason was discovered; and, when the dangerous crisis was past, he was set at liberty. It should seem indeed that, during the three years which followed the Revolution, he was by no means an active plotter. He saw that a Restoration could be effected only with the general assent of the nation, and that the nation would never assent to a Restoration without securities against Popery and arbitrary power. He therefore conceived that, while his banished master obstinately refused to give such securities, it would be worse than idle to conspire against the existing government.