Sybil Beauclerk noblewoman; (1871-1910) (1871–1910) Parents Lady Sybil Grey William Beauclerk, 10th Duke of St Albans Children Mary Montagu Douglas Scott, Duchess of Buccleuch Diana Lascelles Siblings Lady Louise Beauclerk Charles Beauclerk, 11th Duke of St Albans Lady Alexandra Beauclerk Osborne Beauclerk, 12th Duke of St Albans Lady Katherine Beauclerk Lord William Beauclerk Moyra Beauclerk Partners William Lascelles