Emily Seymour, Marchioness of Hertford English noblewoman (1816-1902) (1816–1902) Parents Frederica Murray, Countess of Mansfield David William Murray, 3rd Earl of Mansfield Children Lady Constance Adelaide Seymour Hugh Seymour, 6th Marquess of Hertford Lady Florence Catherine Seymour Lady Georgina Emily Lucy Seymour Frederica Georgina Seymour Lady Mary Margaret Seymour Horatia Elizabeth Erskine Lord Victor Alexander Seymour Lord Ernest James Seymour Lord Albert Seymour Siblings unknown daughter Murray unknown daughter Murray unknown daughter Murray William Murray, 4th Earl of Mansfield and Mansfield Charles John Murray Lady Frederica Murray unknown daughter Murray David Murray Partners Francis Seymour, 5th Marquess of Hertford