Lady Mary Capell Peerage person ID=106717 (1722–1782) Parents Jane Capell, Countess of Essex William Capell, 3rd Earl of Essex Children Maria Eleanor Forbes Katherine Wellesley-Pole, Countess of Mornington Siblings Charlotte Villiers, Countess of Clarendon unknown daughter Capell unknown daughter Capell unknown son Capell William Capell, 4th Earl of Essex unknown daughter Capell unknown daughter Capell Partners John Forbes