Soon after the popish plot, when the Tories began to gain the ascendant over the Whigs, Mr. L'Estrange became a zealous promoter of the Tory interest. He set up a paper called the Observator, in which he defended the court, and endeavoured to invalidate those evidences which were given by Oates's party against the Jesuits. He likewise wrote a pamphlet, in which he attempts to prove, that Sir Edmundbury Godfrey's murther, for which so many suffered, and so great a flame was raised in the nation, was really perpetrated by himself. He attempts to shew that Sir Edmundbury was a melancholy enthusiastic man; that he was weak in his undemanding, and absurd in his conduct. The activity he discovered in Oates's plot, had raised him to such reputation, that he was unable to bear it, and therefore the natural enthusiasm of his temper prompted him to make himself a sacrifice, from a view of advancing the Protestant cause, as he knew his murther would be charged upon the Papists. Mr. L'Estrange's reasoning, being only conjectural, and very improbable, is therefore far from conclusive: It is certain that there never was a more intricate affair than this. We have read the trials of all those who suffered for this murther, chiefly upon the evidence of one Prance, and one Bedloe, who pretended to have been accomplices; but their relation is so inconsistent; their characters so very infamous, and their reward for being evidences supposed to be so considerable, that the most candid enquirer after truth, can determine nothing positively concerning it. All who suffered for the popish plot, denied their knowledge of it; the four men who were executed, as being the perpetrators persisted to the last in protesting their innocence of it. After all, the murther of Sir Edmundbury Godfrey is perhaps one of those secrets, which will ever remain so, till the hearts of all men are laid open. The services, which Mr. L'Estrange rendered the court, procured him the honour of knighthood; and he served as a member for Winchester, in the parliament called by king James the IId. 1685. But things taking quite a different turn in that prince's reign, in point of liberty of conscience, to what most people expected, our author's Observators were dropt, as not being suitable to the times. However he continued licenser of the press 'till the accession of the prince of Orange to the throne; in whose reign, on account of his Tory principles, and his attachment to his late master, he met with some troubles. He was suffered however to descend to the grave in peace, though he had in a manner survived his understanding. He died December 12, 1705, in the 88th year of his age.