Part 1 is an alphabetical arrangement not only of people real (Beethoven, Napoleon and George Washington) and imaginary (Rufus T. Flywheel, Walter Mitty, Bill Sikes), but also of pseudonyms (Cary Grant, Dr. Seuss) and generic characters (The Man in Black, John Doe, The Barber in Peru.
Part 2 groups names and gives further information to put them into context; here you will find Dickensian and Shakespearean characters, Presidents of USA, Nobel Prizewinners, and a host of others in their contexts.