Mike Romanoff, the former Harry F. Gerguson, was a successful “professional impostor.” He accumulated an enormous fount of knowledge in his numerous travels and occupations around the world (and he attended, however briefly, several leading universities). When Hollywood filmmakers needed a technical adviser for a movie set in Europe, Romanoff claimed to be an expert and drew a comfortable salary. The genial Romanoff was a popular figure among the movie colony, and he opened a restaurant that was frequented by many film stars. Romanoff made few screen appearances, but he can be seen in all his fraudulent glory in Sing While You’re Able (1937). David Niven was a close friend, and in his book “Bring On the Empty Horses” he devotes a chapter to the colorful Romanoff.