Warwick, Christopher: - Christoper Warwick was a highly respected royal historian, writer and broadcaster. The best-selling authorized biographer of HRH The Princess Margaret -- Princess Margaret: A Life of Contrasts -- and author of a number of other bestsellers, including George and Marina, Duke and Duchess of Kent and The Life and Death of Ella Grand Duchess of Russia, he also acted as a freelance royal commentator. As an authority on modern royal history, he regularly took part in national television and radio programmes, as well as television documentaries relating to modern royal history from the reign of Queen Victoria to the present day.