Erskine was the son of a Jacobite leader in the ’15, who dissipated his fortune and was compelled to sell his estate. Erskine joined the 22nd Foot commanded by his uncle James St. Clair, on whose generosity he was largely dependent during his early career.
At the general election of 1754 he opposed Philip Anstruther, an old enemy, in Anstruther Easter Burghs. When Anstruther successfully appealed to Pelham for support, St. Clair wrote to James Oswald, 26 Jan. 1754:
[Anstruther] has taken ample care to render both me and my nephew his implacable enemies ... he sent his agents to insinuate that as we were descended from Jacobite families we must be looked on as disaffected to his Majesty and his Government. This malicious insinuation ... I never will forgive ... I never will desist. I will endeavour to place my nephew in that situation where he may be able to show his zeal for the present happy establishment and his attachment to the present administration. Mr. Pelham knows I undertook to answer for him, and since he is now certain of a seat in Parliament, Mr. Pelham will find he will adhere inviolably to the engagements I entered into for him.
In the constituency Sir Harry’s lively personality and courtly manners won him great popularity,
Listed by Dupplin among Government supporters attached to Argyll, Erskine’s political attachments really lay elsewhere. While Argyll maintained good relations with Fox, Erskine fostered the alliance between Bute and Pitt, whom he greatly admired. He voted, 13 Nov. 1755, against the Address, and on 10 Dec. spoke in support of Potter’s motion against the subsidy treaties. In January 1756 he was dismissed from the army by order of the King. On 29 Jan. 1756 Pitt raised the question of his dismissal in the House:
In face of the King’s hostility the Devonshire-Pitt Administration could procure no favours for Erskine. George Dempster wrote on 26 Nov. 1756:
On George III’s accession Erskine was offered full restoration in the army, a regiment, a governorship, or, if he preferred it, civil employment—the King had promised ‘to restore him to his rank when he should come to the Crown’.
I have long looked forward to the late important event, as the only period that could restore me to it ... Officers who were younger lt.-colonels than me have been fortunate enough to have the command of armies ... and thence perhaps my Lord, my attachment to the military line of life has been increased. Nor has it been diminished by comparing that line with the line of civil employment ... Multitudes of competitors; paucity of offices; immense jealousy of those who rise ... the instability of human affairs, and my being born in North Britain, deter me from turning my eyes to that prospect ... When I was dismissed from the service, Lord Barrington told me by way of comfort, that whenever anyone was restored ... he was always restored to his former rank ... The Duke of Argyll who is conversant in army matters saw no difficulty in my being re-established.
He hoped for the rank he might have expected had he remained in the army, but was unwilling to leave the decision to Ligonier, whom he considered prejudiced against him.
Imagination flattered me with a military life, whenever his present Majesty should succeed to the Crown; in the prospect of that event I addressed myself to a young lady, assuring her that I would aspire to her hand as soon as I should be in such circumstances as to be enabled to support the expenses of a married state.
Rather than give up Janet Wedderburn he was prepared to accept less than justice.
As ‘favourite of the Favourite’ Erskine now became, as he styled himself, sous ministre to Bute,
While in Scotland for his own election, Erskine reported to Bute the defeat of the Argyll party at Edinburgh, and his own intervention in Stirling Burghs on behalf of his cousin, Robert Haldane.
I was just going to sit down to entreat your Lordship to prevail on Mr. Mackenzie to return to Britain when I was honoured with your letter. Your Lordship knows too well the small extent of my abilities to be of use to you, but you know also the anxiety which I feel to do all in my poor power to endeavour to serve what it appears to me to be in your interest ... Gratitude ... and affection will ever prompt me not only to execute your orders but to prevent them by guessing at your inclinations.
When Haldane’s Bridport petition was debated, 2 Mar. 1762, Bute’s friends were committed to its support. Walpole writes:
Still, Erskine retained Bute’s full confidence. When on 14 June 1762 he reported that an ‘association’ had been formed against Bute consisting of Cumberland, Newcastle, Devonshire, Pitt, etc., Bute at once informed the King.
After 1761 Erskine had little direct contact with electoral affairs, but was always ready to recruit new ‘friends’ for his patron. In November 1761 he urged George Dempster to attach himself to Bute; in August 1762 he recommended Locke, a neighbour’s son, to Jenkinson as candidate for the Grimsby by-election; and in February 1763 passed on to Jenkinson a long letter from a correspondent on the management of the Isle of Wight boroughs.
In November 1762 General St. Clair died, leaving his entailed estates to his heir, but ‘his ready money to Sir Harry Erskine’,
Violently partisan in support of Bute’s Administration, he went so far as to oppose on 7 Mar. 1763 an address to the King on providing for half pay officers, on the ground that it implied ‘a sort of reflection upon the King’. He was called to order and ‘Mr. Pitt managed the point very properly and strongly against him’.
Erskine supported the Grenville Administration throughout the debates on Wilkes and general warrants, but deplored the breach between Bute and Grenville. In ill-health during the summer of 1764 he wrote from Spa to Jenkinson, 23 Sept.:
I wished that your attempts for thorough conciliation had been attended with more success ... ’Tis with regret I perceive we are to open the next campaign in the same situation in which we were the last. There has been so much time for conciliation ’tis pity it has elapsed in so fruitless a manner.
Before leaving England he had asked Grenville for any military governorship that should become vacant, and on 3 Jan. 1765 applied without success for the governorship of the ports of the north of Scotland.
Prevented by illness from regular attendance at the House, Erskine again wrote to Grenville, 25 Mar. 1765, asking for the vacant office of secretary of the Thistle: ‘As it is a Scotch office ... my obtaining it cannot produce the least murmur from anyone back in England.’
Erskine died at York 9 Aug. 1765 when returning from Scotland after his re-election consequent upon his appointment. Remembered as a faithful friend, a wit and a minor poet,
