Mabel Duncombe (1877-1913) (1877–1913) Parents Muriel Duncombe, Viscountess Helmsley William Duncombe, Viscount Helmsley Children Beatrice Beckett Ann Prunella Beckett Marion Beckett Cynthia Maud Beckett Siblings Charles Duncombe, 2nd Earl of Feversham Partners Gervase Beckett