Margot Duke, Marchioness of Reading British aristocrat and campaigner (1919–2015) Parents Violet Maud Mappin Percival Augustus Duke Children Simon Isaacs, 4th Marquess of Reading Lady Jacqueline Isaacs Lord Antony Isaacs Lord Alexander Isaacs Siblings Sir Charles Thomas Hewitt Mappin, 4th Bt. Daphne Duke Partners Michael Isaacs, 3rd Marquess of Reading