Responses
Therefore, for example, an Egyptian could marry an aunt, but a Roman could not. Despite the act of incest being unacceptable within the Roman Empire, Roman Emperor Caligula is rumored to have had sexual relationships with all three of his sisters (Julia Livilla, Drusilla, and Agrippina the Younger).
From what I see this is a roman empire and incest is a unacceptable thing to do In Rome but there was one emperor who was rumored that he did it with three of his sister