Lyttelton, a cousin of Lord Temple and the Grenvilles, and brother-in-law of Thomas Pitt senior, on whose interest he was first returned at Okehampton, entered politics as a member of the family group led by his uncle Lord Cobham, and took office with them in 1744.
On Henry Pelham’s death, 6 Mar. 1754, Lyttelton, approached by Newcastle, ‘undertook to be a factor for his friends’.
In November 1755 Lyttelton refused to follow Pitt into an opposition which, in his own words, ‘had not even the pretence of any public cause but was purely personal against the Duke of Newcastle’.
Sir George Lyttelton [was] ... well enough in general, but was strangely bewildered in the figures; he stumbled over millions, and dwelt pompously upon farthings.
And 4 Mar. 1756:
I think I never heard so complete a scene of ignorance as yesterday on the new duties ... poor Sir George never knew prices from duties, nor drawbacks from premiums.
Lyttelton was not included in the Pitt-Newcastle Administration, and was consoled with a peerage—his ‘warmest prayer was to go to heaven in a coronet’, wrote Walpole.
Lyttelton spoke frequently in the House of Lords, but remained a second rank politician. He became reconciled to Temple in 1764, voted against the repeal of the Stamp Act in 1766, and in 1769 was included in the Chatham-Temple reconciliation.
Shelburne described him as ‘a good scholar, a dull historian, an amiable man, but a miserable politician’.
