The author of one of the most popular book series of all time has opened up about his struggles with “sadness and depression.” “A Knight of the Seven Kingdoms” received nine Emmy nominations. Steffan Hill/Courtesy HBO MaxMartin co-created HBO’s A Knight of the Seven Kingdoms, a prequel series to Game of Thrones. The first season of A Knight of the Seven Kingdoms premiered in January and received nine Emmy nominations, including a nomination for Outstanding Drama Series. The writer said he wishes his new show's leads received Emmy nods.