 It was held by Lord Tywin Lannister before the War of the Five Kings, but after his death, Queen Regent Cersei Lannister made one of her cousins castellan of the castle.As of "A Dance with Dragons", the narrative has not actually taken place in Casterly Rock, yet descriptions of it have been offered by the Lannisters in the POV chapters.West of Casterly Rock is the coastal city of Lannisport.