Dr Jonathan Oates is the Ealing Borough Archivist and Local History Librarian, and he has written and lectured on the Jacobite rebellions and on aspects of the history of London, including its criminal past. His best-selling books on criminal history are John Christie of Rillington Place, John George Haigh, the Acid-Bath Murderer and London Serial Killers. He is also well known as an expert on family history and has written several introductory books on the subject including Tracing Your London Ancestors and Tracing Your Ancestors From 1066 to 1837.