Mary Hermione Grenfell (1909-1995) (1909–1995) Parents Hilda Grenfell Arthur Grenfell Children James Waldegrave, 13th Earl Waldegrave Lady Elizabeth Waldegrave Lady Sarah Waldegrave William Waldegrave, Baron Waldegrave of North Hill Lady Jane McIntosh Lady Anne Waldegrave Susan Hussey, Baroness Hussey of North Bradley Siblings Frances Campbell-Preston Laura Margaret Grenfell Katherine Florita Grenfell Harry St. Leger Grenfell Reginald Pascoe Grenfell Sybil Vera Grenfell Partners Geoffrey Waldegrave, 12th Earl Waldegrave