Murray entered the army and served in Ireland, in America and in the West Indies. He was subsequently a military spokesman in diplomatic missions and went in 1792 to Koblenz, to the allied headquarters: Lord Grenville informed Henry Dundas that ‘his zeal would induce him to be of service in any manner he could’. By then he was already in Parliament, having been returned unopposed for Weymouth on his father-in-law’s interest in 1790. He was, like his patron, in the minority which favoured the exemption of Scotland from the Test Act, 10 May 1791. He was a supporter of Pitt’s administration and on 31 Jan. 1792 seconded the vote of thanks for the address, expounding the necessity of continental alliances. On 9 Feb. he defended the conduct of General Abercromby, under whom he had served in America. On 29 Feb. he expressed concern at the Russian naval armament. On his return from Koblenz, he opposed Fox’s motion for negotiations with the new French regime and said that although war with France should only take place as a last resort, England would not want for respectable allies. In 1793-4 he proved a controversial adjutant-general to the Duke of York in the Flanders campaign: on his return to England he defended the conduct of the campaign in the House, 21 Jan., 3 Feb., 3 and 10 Apr. 1794.
Murray, who assumed the name of Pulteney on making an advantageous marriage in 1794, was a keen advocate of Pitt’s defence measures, 31 Oct. and 2 Nov. 1796, but doubted whether they went far enough. Like his father-in-law, he voted against ministers on the advance of a loan to the Emperor, 14 Dec. 1796, but he defended continental alliances, 1 May 1797, and maintained that the deliverance of Europe was not philanthropy but a matter of British safety, 11 Dec. 1798. He had subscribed £7,000 to the loyalty loan for 1797. He went on to vote for Pitt’s assessed taxes, 4 Jan. 1798, and accepted the income tax bill as an emergency measure, 27 Dec., but wished to amend it, 31 Dec.; he was dissatisfied as to the secrecy of the returns, speaking and voting against ministers on this question, 11, 14 Mar. 1799. He maintained that the landed gentry should be as privileged in this respect as the commercial classes, 1 Jan. 1799. He advocated the recruitment of regular soldiers from the militia, 20 Feb. During the Helder campaign (1799) he was shot in the arm on landing and afterwards ‘chuckled at being shot through both arms and both legs’. He received the thanks of the House for his services, 26 Sept. General Abercromby said that Pulteney ‘surprised’ him: ‘he showed ardour and intelligence, and did himself honour’. On 25 Apr. 1800 he informed the House that he had only consented to the Irish union from necessity and thought an Irish contingent of 100 Members excessive. In August Pulteney, second in command to Abercromby in the Mediterranean area since April, was sent against Ferrol, but re-embarked his troops, thinking the place too strong to be taken: this caused great dissatisfaction at the time (though it was later vindicated by Sir John Moore) and Pulteney had to defend his conduct at length (which he did in a ‘very able and satisfactory manner’) against Charles Sturt’s censure motion in the House; the motion failed by 144 votes to 75, 19 Feb. 1801.
Pulteney retained his seat after a contest in 1802 and headed the poll in 1806 and 1807. He defended the peace with France, 24 Nov. 1802, and Addington’s defence measures, 8 Dec. 1802, 18 July 1803: no vote of his against that administration is known. In 1803-4 he was in charge of the invasion alarm headquarters at Eastbourne. Lord Glenbervie’s comment typified the lingering prejudice against him: ‘It seems strange to many people that the command in this most vulnerable part of the whole coast of Great Britain should be entrusted to the two officers who conducted the expedition against Ferrol’.
Pulteney, while not acting ‘from a principle of opposition to ... ministers’, led the attack on the Grenville ministry’s repeal of Pitt’s Additional Force Act, 3, 30 Apr., 13 May 1806: he claimed that they had not found a viable substitute for it. As for limited service, he said that to be effective it should be limited as to space as well as to time, since recruits did not want to serve in the West Indies and should be confined to the reserve battalions. On the other hand, he defended the necessity for the training bill, 24 June 1806, to the disappointment of the Pittite opposition, proposing an amendment to make it more effective, 27 June. Nevertheless, the ministry were not interested in seeing him re-elected in 1806.
In the Portland administration, Pulteney was given the office of secretary at war which, wrote Portland, he ‘accepted ... in the most dutiful and becoming manner’.
He died on 26 Apr. 1811 ‘from the unlucky discharge of a fowling piece’. Bunbury the military memoirist thought him ‘a very odd man’ with his ‘grotesque and rather repulsive exterior’:
In point of natural abilities he took high rank. He had seen a great deal of the world and of military service; he had read much and variously and possessed a great fund of knowledge and considerable science. Remarkably good-tempered and unpretending, he was utterly indifferent to danger and to hardship.
His wife’s fortune reverted to her family, but he left £600,000 to his brother John and £200,000 to his brother Rev. William Murray, each in turn succeeding to the baronetcy.
