Griffin was the last of James II’s creations to be accepted by the House following the 1688 revolution. His family was said to be of Welsh descent, though by the seventeenth century they had settled in Northamptonshire at Dingley. According to some sources he was related to both William Shakespeare and Francis Bacon† (Viscount St Albans).
Griffin’s father, Sir Edward, achieved some distinction at court, being appointed treasurer of the chamber to Charles I and, after the Restoration, to Charles II. Griffin succeeded his father in this post and as such served both Charles II and James II. A close companion of James when duke of York, he was with the duke aboard the Gloucester and was fortunate to survive the wreck.
Griffin’s fortunes improved in the new reign. James II stood godfather to his son James Griffin, who, in theory at least, can be regarded as his successor in the barony. Griffin was appointed to local office in his native Northamptonshire in December 1687 and he was one of those who provided a deposition testifying the prince of Wales’s legitimacy in October 1688.
Griffin’s elevation was not automatically accepted. When he attempted to take his seat at the opening of the Convention, objections to his presence in the chamber were raised almost at once. Henry Booth, 2nd Baron Delamer (later earl of Warrington), was reported to have been ‘most violent in opposing Lord Griffin being admitted’, but eventually John Lovelace, 3rd Baron Lovelace (who had also initially been hostile to Griffin), surprised the House by moving for his admission. Lovelace’s motivation appears to have been a desire to prevent Whig peers such as George Carteret, Baron Carteret, from being barred as well.
In April, Griffin was, unsurprisingly, removed from his place of treasurer of the chamber.
The opening of the second session of the Convention offered Griffin a final opportunity to submit to the new regime. On 19 Oct. 1689 Nottingham informed the House that Griffin had surrendered himself to him and was now waiting in the lobby. The information elicited some debate as to how Griffin might appear. Some objected that he was unable to stand in his place but that it was also inappropriate for him to appear at the bar as he was as yet not charged with anything. As a compromise, he was summoned to the Speaker’s chair. Asked if he would take the oaths, Griffin claimed to have come unprepared to do so and asked for time to make up his mind. He quit the chamber to commune with his thoughts.
Griffin’s apparent willingness to consider co-operating with the new regime proved to be a mask and he was soon involved in further plotting. Later that month his wife was arrested following the uncovering of an incompetent effort to convey messages to St. Germain secreted in the false bottoms of pewter tankards (the so-called pewter pot plot). Griffin and his son were also ordered to be arrested. Among the papers discovered was a draft warrant for Griffin to be advanced to an earldom, complete with a request that the date of the award should be backdated to before James’s abdication.
For all the farcical elements that surrounded this latest conspiracy, dismissed by Charles Hatton as ‘much more ridiculous than Mrs Cellier’s meal tub’, the plot did hint at a more serious, broader conspiracy against the fledgling regime of William and Mary. Griffin had been able to find out secret details about orders relating to the navy, which seemed to suggest that he had access to high-level information. It was also put about that he had ‘impeached at least 20 persons of note’. The House ordered him to be brought before them once more on 12 November. Again, Lovelace demonstrated himself to be an unlikely friend: he assured the House that ‘Lord Griffin would take the oaths, and offered to stand bail’.
Griffin did not remain at large for long. In July of the following year he was again imprisoned in the Tower following further Jacobite intriguing.
By the late summer of 1690 Griffin had been released once more and in September he was free to set up his horses for the races at Newmarket.
During Griffin’s absence many of his estates at Dingley and Braybrooke in Northamptonshire were confiscated, though his son, James, continued to exercise some influence in the area.
Griffin finally attempted to stage his return to England by becoming involved in the abortive 1708 Jacobite invasion. Along with the sons of Charles Middleton‡, 2nd earl of Middleton [S], he was aboard the Salisbury, the only ship in the French fleet to fall into English hands.
Griffin was brought before queen’s bench. Referred to as ‘the late lord Griffin’, his argument that he was unaware of his outlawry was rejected by the court and he was refused permission to stand trial on the basis of an error in the original declaration.
The night before the execution was due to take place, the Privy Council narrowly voted in favour of a stay of execution for a fortnight.
Griffin’s son was permitted to retain most of the family estates, and during the ministry of Robert Harley, earl of Oxford, it was rumoured that James Griffin might be restored to the peerage. In the event it was not until 1727 that George I overturned Griffin’s outlawry, accepting that an error had been made in the way that it had been declared.
