Augustus Fitzwalter St. John-Mildmay (died 1839) (d. 1839) Parents Harriet Bouverie Sir Henry St John-Mildmay, 4th Baronet Children Siblings Horace Osborne St. John-Mildmay Bouverie Francis Primrose Archibald Primrose, Lord Dalmeny Lady Mary Anne Primrose Lady Harriet Primrose Edmond St John-Mildmay Sir Henry St John-Mildmay, 5th Baronet