Unity Mitford July 1996), and Deborah (31 March 1920 – 24 September 2014), later the Duchess of Devonshire. The Mitford children lived at Asthall Manor in Asthall, Oxfordshire, and Unity was educated at St Margaret's School, Bushey. Diana Mosley’s biographer, Jan Dalley, believes that, "Unity found life in her big family very difficult because she came after these cleverer, prettier, more accomplished sisters." While another biographer, David Pryce-Jones, added: "If you come from a ruck of children in a large family, you've got to do something to assert your individuality, and I think through the experience of trying to force her way
Nancy Mitford in favour of the new arrival was a further source of outrage to Nancy, and throughout their childhood and into young adulthood she continued to vent her displeasure on her sister. In January 1909 a brother, Tom was born, and in June 1910 another sister, Diana, followed. That summer, to relieve the pressure on what was becoming an overcrowded nursery, Nancy attended the nearby Francis Holland School. The few months she spent there represented almost the whole of her formal schooling; in the autumn the family moved to a larger house in Victoria Road, Kensington, after which Nancy was educated