Jackson, ‘from his extraordinary stores of knowledge ... styled omniscient’,
He became connected with Benjamin Franklin through Peter Collinson, the naturalist, whose letter of 26 Sept. 1751 gives an early glimpse of him:
I have prevailed on our worthy, learned, and ingenious friend Mr. Jackson to give some dissertations on the husbandry of Norfolk, believing it may be very serviceable to the Colonies. He has great opportunities of doing this, being a gentleman of leisure and fortune, being the only son, whose father has great riches and possessions, and resides every year, all the long vacation, at his father’s seat in Norfolk.
During Franklin’s stay in England, 1757-62, they were much together, and Franklin furnished Jackson with materials for his Historical Review of the Constitution and Government of Pennsylvania, published anonymously in June 1759; and Jackson assisted Franklin over his pamphlet on The Interest of Great Britain with regard to Canada and Guadeloupe, published in 1760.
In 1759-60 Jackson bought a farm of 700 acres in Connecticut; and next, together with Franklin, engaged in schemes for new western colonies, including the Vandalia project. In 1764 he obtained a grant of 20,000 acres in Nova Scotia.
On the vacancy caused at Weymouth by the death of John Olmius, 1st Baron Waltham, Fox wrote to Bute, 17 Nov. 1762: ‘Lady Waltham does not intend her son, but one Mr. Jackson.’
On 24 Mar. 1760 Jackson was chosen by the Connecticut assembly agent in Great Britain, to act jointly with Jared Ingersoll during his stay in London;
Before accepting the Massachusetts agency Jackson, by then secretary to the chancellor of the Exchequer, asked for Grenville’s views—‘his own inclination’, wrote Jenkinson to Grenville, 11 Apr. 1765, ‘rather led him to decline it and yet if his acceptance of it would be of service to Government he was ready to take it’. The date of Jackson’s appointment to the Exchequer is uncertain, though most probably it was soon after Grenville himself had taken office: Jackson’s letter to Jenkinson of 18 Sept. 1763 suggests an official connexion between them; so does the remark to Franklin, 27 Dec. 1763, that he has ‘a good deal of access’ to Grenville, and has ‘received a very considerable mark of his good will and esteem, and what is generally too deemed a mark of his confidence’. The description often given of him as ‘private secretary’ to Grenville is misleading (it was Charles Lloyd), and the relation between them was never close; in the mass of Grenville correspondence there is not one letter from or to Jackson; and on 21 Apr. 1768 Grenville wrote to Lord Halifax that he scarce ever exchanged a word with Jackson since leaving the Exchequer, ‘and he has I think in every vote acted differently from me’.
Jackson had hoped while ‘in favour with Administration’ to do effective service to the Colonies and the mother country—‘I consider their interests as inseparable’.
I am ... employed not only in attending the House, but in combating what I deem the most dangerous errors in American politics in 100 places ... I have access to almost every place any friends of the colonies would wish to have access to, but I am not sensible of my making any impression proportioned to my endeavours.
And when Franklin, on 25 June 1764, referred to ‘letters from people at home to their American friends ... mentioning in the strongest terms your zeal for the welfare of the Colonies, and the success attending it’, Jackson replied that in fact he had ‘very little weight or influence’. This is not the style of a self-seeking or self-important person; nor did he value the agencies for their emoluments. He left it to the Connecticut assembly whether any salary should be paid to him for the four years while Ingersoll was still in England, and it was the assembly, ‘fully sensible of the great pains taken and good services rendered’ by him and ‘in full confidence of his future friendship’, who desired him to charge it from 30 May 1760.
Jackson’s first reported speech in the House was on the American bill, 22 Mar. 1764, pleading for a lower duty on molasses. Over Wilkes and general warrants he supported the Government: on 28 Jan. 1765, the night before the subject came up once more in the House, he was at the meeting of ‘men of business’ at Grenville’s house. On 2 Feb., together with other colonial agents, he waited on Grenville, to remonstrate against the impending stamp bill, and ‘told him plainly’ what consequences he foresaw from ‘the measure now pursuing’.
In the summer of 1765 Jackson, who left the Exchequer with Grenville, was wrongly classed by Rockingham as ‘contra’. He supported the repeal of the Stamp Act; and on 27 Feb., writing to Connecticut about the forecasts by opponents that it would produce further disorders in America, warned them that ‘the credit of the best friends America ever had is pledged that this will not be the case’. On 18 Apr. 1766, in a debate on the budget, he spoke on the Government side against Grenville.
Next, Jackson adhered to the Chatham Administration; it included Shelburne who, when at the Board of Trade, had wanted him for its counsel,
In 1768, Lord Waltham being of age, Jackson had to give up the seat at Weymouth, and was returned for New Romney, a borough at the disposal of the Treasury. On 19 Apr. 1769 Jackson made his last recorded speech on America, in support of Pownall’s motion for a repeal of the Townshend duties: ‘I consider the preservation of America to depend upon the repeal of this act. Laws cannot be carried into execution, countries cannot be well governed, when there is universal discontent among the people.’
Jackson, agreeing with the principle of parliamentary sovereignty over the Colonies, must have found his position as colonial agent increasingly awkward. Still, it is difficult to explain how he henceforth reconciled himself to supporting the Government, whose American policy he condemned but on whose interest he was re-elected in 1774 and 1780. He did not speak again on America except in June 1774 on some technical aspects of the Quebec bill,
declared he had uniformly voted for the repeal of the Stamp Act, against the Boston port bill, and the other bills, which he had declared both in public and private, to be the cause of our misfortunes. But he had voted for a supply, because as the country was in a state of war, he did not wish to leave it without fleets and armies.
Debrett, iii. 600.
In a letter of 30 Nov. 1784 to a Connecticut friend, W. S. Johnson, he even claimed to have voted against all legislation concerning America,
In February-April 1778 there was an opening for Jackson to take an active part in American affairs: he was invited by the Government to join Lord Carlisle and William Eden in the conciliatory mission. Carlisle wrote about him to a friend:
I bent to the persuasion that his accurate knowledge of the country to which we were to repair, and his long and familiar acquaintance with her interests, would outbalance the insignificancy of his situation and the obscurity of his name.
And Jackson wrote to Eden on 28 Feb.:
I assure you with great truth, nothing could have contributed more to my acceptance of the honour intended me, than your making one of the commission; that will at least make the passage agreeable. No objection that I have to the bill (though I have at least one that weighs much with me), no inconvenience that can happen to my affairs in England, shall prevent me from going, if named: but you must be sensible that the instructions make a material part of the plan; you will recollect that I expressed a wish the other day that they might be full and precise. I am not afraid of being too much straitened, in point of discretion: though it is true on the other hand that I can conceive them drawn so as to exclude all hope of good effect, which last, I do not believe will be the case; believing however, as I do, that the ends of the plan will be otherwise frustrated.
He went on with reservations and apprehensions, and concluded:
The commencement of the American war always appeared to me an impolitic measure, the continuance of it cannot be less than ruin to this empire, and will be an object that I cannot be near without an anxiety that will be too much for me to bear.
Equally expressive of his unfitness for the task was a further short letter to Eden on 1 Mar.:
I could almost wish you did not consider me as having accepted ... difficulties insurmountable may arise from the instructions, I wish to be entrusted with no discretion unless it be accurately limited and defined at both ends. I certainly have not accepted, but upon the supposition that I find myself sufficiently instructed, and that too in a manner not likely to defeat the end.
During March Jackson grew increasingly averse to going; raised objections which, when surmounted he ‘repeated with a fresh addition of difficulties’;
said ... that we should proceed immediately to give independence to the Colonies—that he had made a great subscription to the loan which was still unsettled—that he should wish soon to come back—that he could not go this month and even then should leave all his affairs at sixes and sevens—that it did not signify when they arrived—and was of no consequence except to satisfy the people of this country—that his seat in Parliament might be vacated—‘and such a deal of skimble-skamble stuff etc.’
Upon the whole he has convinced me that he does not mean to go—and also that he ought not to go.
When North reported the matter to the King, George III replied on 1 Apr.: ‘I am very clear he ought not to be allowed to go.’
That intercourse continually lessened until upon my declining to go out a commissioner to America with emoluments to the amount of £6 or £7,000 sterling, the little intercourse that remained ceased, and first I began to remit in my attendance on Parliament and afterwards to give way to a resolution to have little to do with public affairs.
But he would refuse taking part in them only when convinced that he could be of no use.
This conviction I was under in 1778, and I got the better of the most earnest solicitation—but I was convinced ... that the commission could only operate by reconciling the people of this country to a continuance of the war. The event proved my judgment to be true.
When Shelburne included Jackson in his Treasury list on 9 July 1782,
He did not seek re-election in 1784, and died 6 May 1787, aged 65.
