They reconciled themselves to the duke of Queensbury, and the other noblemen of the episcopal party: they wrote to James for a supply of money, arms, and ammunition, together with a reinforcement of three thousand men from Dunkirk.

Montgomery had acquired great interest among the whigs of England, and this he-employed in animating them against the king and the ministry.

He represented them as a set of wicked men, who employed infamous spies to insnare and ruin the fast friends of the government, and found means to alienate them so much from William, that they began to think in earnest of recalling their banished prince The duke of Bolton and the earl of Monmouth were almost persuaded into a conspiracy for this purpose; they seemed to think James was now so well convinced of his former errors, that they might trust him without scruple.
Montgomery and Payne were the chief managers of the scheme, and they admitted Ferguson into their councils, as a veteran in the arts of treason.

In order to blast William's credit in the city, they circulated a report that James would grant a full indemnity, separate himself entirely from the French interest, and be contented with a secret connivance in favour of the Roman catholics.

Montgomery's brother assured the bishop of Salisbury that a treaty with king James was absolutely concluded, and an invitation subscribed by the whole cabal.
He said this paper would be sent to Ireland by the way of France, as the direct communication was difficult; and he proposed a method for seizing it before it should be conveyed out of the kingdom.