John Hamilton Bruce (1889-1964) (1889–1964) Parents Henry Bruce, 2nd Baron Aberdare Constance Mary Beckett Children Gillian Constance Bruce Daphne Juliet Bruce David Hamilton Grant Duff Bruce Siblings Victor Bruce Margaret Bruce Robert Bruce Constance Pamela Alice Bruce Clarence Bruce, 3rd Baron Aberdare Violet Bruce Henry Lyndhurst Bruce Eva Primrose, Countess of Rosebery Partners Cynthia Juliet Duff