Hester Pitt, Countess of Chatham

The Right Honourable The Countess of Chatham
Portrait by William Hoare, c. 1766
Born	Hester Grenville (1720-11-08)8 November 1720 London, England
Died	9 April 1803(1803-04-09) (aged 82) Burton Pynsent, Somerset, England
Buried	Westminster Abbey
Spouse(s)	The Earl of Chatham ​ ​ (m. 1754; died 1778)​
Issue	Hester Stanhope, Viscountess Mahon John Pitt, 2nd Earl of Chatham Lady Harriet Eliot William Pitt the Younger Hon James Charles Pitt
Parents	Richard Grenville Hester Grenville, 1st Countess Temple

Hester Pitt, Countess of Chatham (née Grenville; 8 November 1720 – 9 April 1803) was the wife of William Pitt the Elder, 1st Earl of Chatham, who was prime minister of Great Britain from 1766 to 1768.^[1]

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 Grenville, her sister-in-law, are the only two women in British history to have been both the wife of a prime minister and the mother of another prime minister.