Lady Frederica Murray (died 1823) (d. 1823) Parents Frederica Murray, Countess of Mansfield David William Murray, 3rd Earl of Mansfield Children James Stanhope Siblings unknown daughter Murray unknown daughter Murray unknown daughter Murray Emily Seymour, Marchioness of Hertford William Murray, 4th Earl of Mansfield and Mansfield Charles John Murray unknown daughter Murray David Murray Partners James Hamilton Stanhope