Wikipedia
Epidicus
Epidicus is an ancient Roman play written by T. Maccius Plautus. It is said to be one of Plautus's favorite works. Epidicus is the name of the main character, who is a slave. The plot takes many turns as Epidicus tries to please his master's son, Stratippocles. The main plot was based upon a Greek play, however the story line was changed in order to prevent a brother from marrying his half-sister. This change was made because Romans considered this incest, which deeply disturbed them; the Greeks, however, were not bothered by this.