[IS,P, Phil] Don't laugh. The reason why "The Madness of George III" was transformed into "The Madness of King George" was that market research in the US showed that people were less likely to go and see the film because they hadn't seen "The Madness of George I" and "The Madness of George II".
*Rings Doorbell* "Hi ... remember me? I'm the salesperson who waited on you this evening. I couldn't help but notice the titles you selected and seeing as my shift was ending, I tail-gated you home with my headlights off so's not to frighten you ... and [l o o o n g p a u s e] here we are. Can I come in?"