Lady Harriet Pitt (died 1786) (1758–1786) Parents William Pitt, 1st Earl of Chatham Hester Pitt, Countess of Chatham Children Hester Harriet Pitt Eliot Siblings John Pitt, 2nd Earl of Chatham Hester Stanhope, Viscountess Mahon William Pitt the Younger James Charles Pitt Partners Edward James Eliot