Harry Turtledove is an American novelist of science fiction, historical fiction, and fantasy. Publishers Weekly has called him the "master of alternate history," and he is best known for his work in that genre. Some of his most popular titles include The Guns of the South, the novels of the Worldwar series, and the books in the Great War trilogy. In addition to many other honors and nominations, Turtledove has received the Hugo Award, the Sidewise Award for Alternate History, and the Prometheus Award. He attended the University of California, Los Angeles, earning a PhD in Byzantine history. Turtledove is married to mystery writer Laura Frankos, and together they have three daughters. The family lives in Southern California.