Miller’s marriage brought him a considerable fortune, enabling him to settle in England and to build a handsome villa. Horace Walpole wrote to Mann, 24 Apr. 1776, that when he met Miller and his wife shortly after their marriage he found them ‘mighty civil simple people’; but they ‘ran out their fortune’ and went to France and Italy to repair it.
Thence they returned [Walpole continued], her head turned with France and bouts rimés; his with virtù. They have instituted a poetic academy at Bath Easton, give out subjects, distribute prizes, publish prize verses, and make themselves completely ridiculous; which is [a] pity, as they are good-natured, well-meaning people.
Their literary group flourished till Lady Miller’s death in 1781, and though frequently ridiculed, received contributions from numerous and diverse people including Garrick, Admiral Keppel, and the Duchess of Northumberland.
At the general election of 1784 Miller was returned for Newport on the Duke of Northumberland’s interest. In Parliament he seems to have followed an independent line; his only recorded votes, on Richmond’s fortifications plan, 27 Feb. 1786 and the Regency, 1788-9, were with opposition, but his speeches show a great admiration for Pitt whom he called ‘the successor in name, virtue, talents, and situation’ to that ‘great and ever revered minister Chatham’;
Miller, referring to his army career, spoke several times on military affairs, praising the militia in a long speech on 10 May 1786; he also took a considerable interest in naval affairs and more than once commended Pitt’s Admiralty Board, declaring on 5 Mar. 1787 that ‘never ... was the British fleet so considerable in point of number, force, condition or efficacy of ships’.
called emphatically upon the independent gentlemen then present, who like him, had been heretofore deluded by specious statements or by regards to public necessity to come forward with him manfully upon the present occasion, and by retracting to atone for their former error and unintentional oppression.
Ibid. xiv. 50.
During Miller’s last years in Parliament his chief preoccupation was the reform of weights and measures; he carried out privately a widespread inquiry, corresponding with authorities all over the country and abroad, and on 24 July 1789 gave notice that he should move for a committee to consider the expediency of establishing a general standard. He told the House: ‘To methodize and digest ... such a mass and variety of materials, in order to bring the subject before a committee in some form and shape, has fully occupied and continues to give employment to every diligence I can lay claim to.’
He does not seem to have attempted to re-enter Parliament at the general election of 1790. After his death on 28 May 1798, the Gentleman’s Magazine (1798, pp. 626-7) wrote of him:
His exertions ... in favour of equal weights and measures, though unsuccessful, will be gratefully remembered ... For many years past, Sir John’s great amusement was a constant inquiring after, and as constant circulation of, the news of the day. Wherever news was to be had Sir John was present; amongst the grave readers at Hookham’s, the fiery politicians at Stockdale’s, the facetious disputants of the Westminster Library, or even the sapient money hunting herd of Lloyd’s coffee house, if news was to be had, Sir John was there to glean it, and to do him justice, was equally alert in retailing it to his friends.
Which echoes Horace Walpole’s reference many years before to Miller’s ‘good-natured officiousness’.
