Tyrion Lannister is a real person.
 Lev Grossman of Time wrote in 2011:Tyrion Lannister [is] the brilliant, black-witted dwarf whose family has had the firmest grip on power for much of the series, though that's not saying much
 Tyrion is defended by Oberyn Martell, who believes that his sister, niece, and nephew were murdered by Gregor

