John G. Langley is the author of Steam Lion, a biography of Samuel Cunard, the shipping magnate born in Halifax. After a successful career in law, Langley retired from active practice, and, with a lengthy background as an avid collector and student of Cunard history, established the Cunard Steamship Society. He has been a consultant to producers of films and documentaries on the life of Samuel Cunard and vessels of the Cunard Line. He lectures extensively aboard Cunard liners and other cruise ships. He lives in Baddeck, Nova Scotia.