Henry St John, 18th Baron St John of Bletso English Baron (1876-1920) (1876–1920) Parents Beauchamp St John, 17th Baron St John of Bletso Helen Charlotte Thornton Children Siblings Moubray St John, 19th Baron St John of Bletso Helen Mary St. John Rowland Tudor St. John Barbara Ethel St. John Alice Gertrude St. John Emily Caroline Emma St. John Charles Paulet St. John Mabel Eleanor St. John Eva St. John Margaret St. John Edith Laura St. John