Because it's set so far back in the past, the show will take place before even House Targaryen and its dragons graced Westeros. But what does this mean for our other favorite Thrones families? "The Lannisters aren't there yet, but Casterly Rock is certainly there; it's like the Rock of Gibraltar," Martin said. "It's actually occupied by the Casterlys - for whom it's still named after in the time of Game of Thrones."
While the prequel predates both the Lannisters and the Targaryens,