Arthur Ponsonby, 11th Earl of Bessborough British peer (1912-2002) (1912–2002) Parents Rita Longfield Myles Ponsonby Children Lady Sarah Ponsonby Matthew Douglas Longfield Ponsonby Charles Arthur Longfield Ponsonby Myles Ponsonby, 12th Earl of Bessborough Siblings Anne Longfield Flower Partners Madeleine Ponsonby, Countess of Bessborough Patricia Minnigerode Anne Marie Baronin von Slatin