Who Was Artemidorus in the Play "Julius Caesar"?

In the play "Julius Caesar," Artemidorus is a teacher of rhetoric who tries to warn Caesar about those conspiring against him in. Artemidorus expresses a great respect for Caesar. This hearkens back to a time when Caesar was roundly celebrated; while the men plotting to kill him now want him dead, this was not always the case.

He enters in Act II: Scene 3 with a letter detailing the plot on Caesar's life. Artemidorus is a master of rhetorical flourish, but his letter to Caesar contains only facts. This straightforward recitation of the traitors' plot, however, cannot successfully save the life of Caesar. Caesar is so convinced of his god-like stature that he cannot believe he could die by the hand of a mere mortal.