Hester Stanhope, Viscountess Mahon British noble (1755-1780) (1755–1780) Parents Hester Pitt, Countess of Chatham William Pitt, 1st Earl of Chatham Children Griselda Stanhope Hester Stanhope Lady Lucy Rachel Stanhope Siblings John Pitt, 2nd Earl of Chatham William Pitt the Younger Lady Harriet Pitt James Charles Pitt Partners Charles Stanhope, 3rd Earl Stanhope