As a young man in his early twenties, Macartney formed an intimate connexion with the Fox family, having, according to Horace Walpole, travelled the continent ‘as some sort of governor’ to Stephen Fox.
In 1764 Macartney attempted to enter Parliament. Lord Holland, endeavouring to secure a vacancy for him at Midhurst, wrote to Grenville on 26 Mar.: ‘Mr. Macartney ... will be a constant attender and a zealous and steady supporter of his Majesty’s measures under your conduct. This, I, who hardly ever answered for anybody but myself, will, and do, answer for.’
A seat in Parliament has long been the great object of my ambition. I am, however, by no means dissatisfied at my situation; on the contrary I like the profession extremely ... But at this court it is impossible ever to go higher ... Had I a seat in Parliament, might I not with more reason pretend to something better in this course of life ... May I venture to ask your Lordship whether ... you could secure for me a seat in the next Parliament for the sum of £2,000.
After Macartney returned to England the following June, Holland seems almost immediately to have begun to negotiate a seat for him. In August he was mentioned as a prospective candidate at Stockbridge,
Sure I am that no secretary ever served Government with greater fidelity and trust than I did, and no secretary ever received so little thanks for it. I have seen his Lordship [North] but twice since my arrival here. He is without doubt a very able minister ... but he appears to me totally void of feeling, and rather to underrate than justly value political services, which is a very discouraging thing to those who do them.
He was now anxious to re-enter Parliament, and on 25 June North wrote to the King:
Sir George Macartney has often solicited Lord North to render his Irish pension tenable with a seat in the British House of Commons. Of all methods proposed by Sir George, the least objectionable is to let him continue to hold his pension as the salary of an Irish place during pleasure ... Lord Bute has promised Sir George to bring him into Parliament at the next election for a district of boroughs in Scotland which makes him very impatient for some arrangement.
Macartney’s appointment as constable of Toome Castle, County Wexford, was confirmed shortly before his election for Ayr Burghs. During this Parliament no vote by Macartney is recorded before he vacated his seat on his appointment as governor of Grenada, but on 23 Jan. 1775 he spoke against the petition from London merchants trading with North America for the restoration of commerce with the colonies, and one other minor intervention by him on Irish trade is reported.
He died 31 Mar. 1806.
