Leveson (as he was always called) was connected with Sir Charles Saunders and Augustus Keppel, and served under Keppel in the indecisive action off Ushant in June 1778. Sandwich, first lord of the Admiralty, wrote about him to the King in November 1778
Though much attached to Mr. Keppel, has kept himself out of all disputes and shown no partiality to either side; has attended closely to the duty of his ship and is perhaps one of the most valuable officers in the King’s service.
Leveson’s opinion of Sandwich is shown in a letter he wrote to William Cornwallis, 27 Feb. 1776:
As to Lord Sandwich, he never had any decency, and, shocking as it is, yet it is most true that he concealed the account of his son’s death [William Augustus Montagu] two or three days, that it might not stop the amusements and entertainments which he was then making at Hinchinbrooke.
Leveson took Keppel’s part after the court martial (he wrote to Lady Cornwallis about Keppel, 2 Oct. 1779:
The story of Leveson’s quarrel with Lord Chatham, appointed first lord of the Admiralty in July 1788, is told in a letter to William Cornwallis of 19 Feb. 1790:
Soon after you left this country I was obliged to resign the Admiralty. I had before Christmas [1788] met some things which were very disagreeable to me, but on my return to town after those holidays I found so much of what might really be called incivility, that as soon as his Majesty was said to be well enough recovered to do business, I gave in my resignation.
This did not affect his political conduct, for he voted with Pitt on the Regency.
Leveson died 15 Aug. 1792.
