Dante Alighieri wrote about the 9 circles of hell: Limbo, Lust, Gluttony, Greed, Anger, Heresy, Violence, Fraud, and Treachery.  He writes about seeing Plato, Homer, Socrates, Brutus, Judas Iscariot in different circles.  Click on his Google Plus profile image below:

Forgive my terrible photo editing here. I deserve to get dropped into the treachery circle for sure.