Claim: Cersei Lannister is in a series written by an American author.
Evidence: Cersei Lannister is a fictional character in the A Song of Ice and Fire series of fantasy novels by American author George R. R. Martin , and its television adaptation Game of Thrones , where she is portrayed by Lena Headey.
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.