Claim: Game of Thrones (season 1) was based on a novel by author and screenwriter George R. R. Martin.
Evidence: The series is based on A Game of Thrones , the first novel in the A Song of Ice and Fire series by George R. R. Martin , adapted for television by David Benioff and D. B. Weiss.
George Raymond Richard Martin -LRB- born George Raymond Martin ; September 20 , 1948 -RRB- , often referred to as GRRM , is an American novelist and short-story writer in the fantasy , horror , and science fiction genres , screenwriter , and television producer.