Lady Mabel Duncombe (died 1926) (1860–1926) Parents Mabel Graham William Duncombe, 1st Earl of Feversham Children Daphne Graham Sir Fergus Graham, 5th Baronet Richard Graham-Vivian Siblings William Duncombe, Viscount Helmsley James Duncombe Helen Vincent, Viscountess D'Abernon Lady Hermione Duncombe Lady Ulrica Duncombe Hubert Duncombe Partners Sir Richard Graham, 4th Bt.