William Pitt, 1st Earl of Chatham Prime Minister of Great Britain from 1766 to 1768 (1708–1778) (1708–1778) Parents Harriet Villiers Robert Pitt Children Hester Stanhope, Viscountess Mahon William Pitt the Younger Lady Harriet Pitt James Charles Pitt John Pitt, 2nd Earl of Chatham Siblings Thomas Pitt of Boconnoc Partners Hester Pitt, Countess of Chatham
