Who was the Prime Minister of Great Britain from 1765 to 1766?
Marquess of Rockingham County of Northampton, in the Peerage of Great Britain. He was succeeded by his second but only surviving son, the second Marquess. In September 1750, two months before succeeding his father, he was raised to the Peerage of Ireland in his own right as Baron Malton and Earl Malton. Lord Rockingham was a prominent Whig grandee and served as Prime Minister of Great Britain between 1765 and 1766 and again in 1782. When he died in 1782 all of his titles became extinct. His estates passed to his nephew, William Fitzwilliam, 4th Earl Fitzwilliam. The family seats were Rockingham Castle,
Hester Pitt, Countess of Chatham Hester Pitt, Countess of Chatham Hester Pitt, Countess of Chatham, 1st Baroness Chatham (; 8 November 1720 – 9 April 1803), who was Baroness Chatham in her own right, was the wife of William Pitt (the Elder), 1st Earl of Chatham, who was Prime Minister of Great Britain from 1766 to 1768. The sister of George Grenville, who was Prime Minister from 1763 to 1765, she was also the mother of Prime Minister William Pitt the Younger and a niece of the noted Whig politician Richard Temple, 1st Viscount Cobham, who had served as her husband's mentor. Chatham and Elizabeth