"Cavendon Hall is home to two families, the aristocratic Inghams and the Swanns who serve them, just as their ancestors did over the centuries. Charles Ingham, the sixth Earl of Mowbray, lives there with his wife Felicity and their six children: Guy, the heir, who is studying at Cambridge; their younger son Miles, attending Eton; and their four daughters Diedre, Daphne, DeLacy and Dulcie, affectionately called the Four Dees by the staff. Walter Swann,...