 Orwell may be Mr W. Elder, Forest Manager of Anglo-Siam Forest Company, a heroic figure who lived amongst the elephants of Muang Ngow near Lakon (in the book Nakon) and retired in Riverhead, Kent dying in about 1935.He gives a fairly accurate appraisal of life as an assistant forest manager with its dangers from disease and wild animals while logging teak with elephants.Campbell also wrote a book about an elephant breeder and trader in Siam in the 1920s, which is a ripping yarn but scarcely believable called "Jungle Nights".