Martin yavuze kenshi ko akunda ibikorwa vy'uwo mwanditsi Costain, kandi usanga hari ibivugwa muri 'Wars of the Roses' bishusha n'ibikinwa mu ntambara hagati y'imiryango ya Lannister na Stark bapfa umugabane wiswe Westeros muri 'Game of Thrones'.
