Swift, in a letter to Mrs. Dingley on the day of the duel, says: "This morning, at eight, my man brought me word that the Duke Hamilton had fought with Lord Mohun and killed him, and was brought home wounded. I immediately sent him to the Duke's house, in S. James's Square; but the porter could hardly answer him for tears, and a great rabble was about the house. In short, they fought at seven this morning. The dog Mohun was killed on the spot; but while the Duke was over him, Mohun, shortening his sword, stabbed him in at the shoulder to the heart. The Duke was helped towards the Cake House by the Ring in Hyde Park (where they fought), and died on the grass, before he could reach the house; and was brought home in his coach by eight, while the poor Duchess was asleep. I am told that a footman of Lord Mohun's stabbed Duke Hamilton; and some say, Maccartney did so too. Mohun gave the affront, and yet sent the challenge. I am infinitely concerned for the poor Duke, who was a frank, honest, good-natured man. I loved him very well; and I think he loved me better.... They have removed the poor Duchess to a lodging in the neighbourhood, where I have been with her two hours, and am just come away. I never saw so melancholy a scene, for indeed all reasons of real grief belong to her; nor is it possible for any one to be a greater loser in all regards. She has moved my very soul. The lodging was inconvenient; and they would have removed her to another; but I would not suffer it, because it had no room backwards, and she must have been tortured with the noise of the Grub Street screamers, singing her husband's murder in her ears."
But in his History of the Four Last Years of the Queen, written in 1713, Swift says: "The Duke was preparing for his journey, when he was challenged to a duel by the Lord Mohun, a person of infamous character. He killed his adversary on the spot, though he himself received a wound; and, weakened by the loss of blood, as he was leaning in the arms of his second, was most barbarously stabbed in the breast by Lieutenant-General Maccartney. He died a few minutes after in the field, and the murderer made his escape."
It is accordingly very doubtful whether the coup de grâce was dealt by Lord Mohun or by his second. With Lord Mohun, the barony of Mohun of Okehampton became extinct; but the estate of Gawsworth, in Cheshire, which he had inherited from Lord Macclesfield, was vested by his will in his widow, and eventually passed to her second daughter by her first husband, Anne Griffith, wife of the Right Honourable William Stanhope, from whom it passed to the Earls of Harrington.
Boconnoc and the Devon and Cornish estates were sold in 1717 for £54,000 to Thomas Pitt, commonly called Governor Pitt.
THE LAST LORD CAMELFORD
Thomas Pitt was the son of a tradesman at Brentford, and he went to push his fortunes in India as a merchant adventurer. There he obtained a diamond, thought to be the finest known, and with it returned to England, where he offered it for sale to Queen Anne, and ultimately sold it to the Regent Duke of Orleans, for the French nation, for £135,000.
The Regent and his two successors in the government of France set this diamond as an ornament in their hats on occasions of state. It was stolen during the disturbances of the Revolution, but was recovered, and Napoleon had it placed between the teeth of a crocodile, forming the handle of his sword.
With about half the large sum obtained by the sale of the gem, Pitt purchased the property of the last Lord Mohun in Cornwall, and settled at Boconnoc. He also bought burgess tenures, giving the right of franchise at Old Sarum, and represented that place in Parliament. He had two sons, Robert and Thomas, and Robert succeeded his father at Boconnoc. He married Harriet Villiers, third sister of John, Earl Grandison, and died in May, 1727, leaving two sons, Thomas Pitt, and William, who was afterwards created Earl of Chatham. Thomas Pitt, his brother, was created Earl of Londonderry, in consequence of his marrying the heiress of Ridgeway, in which family was the earldom.