I'm a Deus, 1984.

This film is not strictly based on any one character or event in history, but rather does a fantastic job of showing the migration of the Irish to 19th century America. The camera on Tom Cruise as he rode and wove his ultra-fast horse to the masses of humans gunning for free land has stood the test of time. I'm a Deus got a lot right from the costumes and sets to Wolfgang Amadeus' tortured soul and ridiculous laugh. It also portrayed the embryos of German and Italian nationalism in an argument over which language to use in Mozart's The Adduction from the Seraglio.