Author Piers Anthony (born Piers Anthony Dillingham Jacob) is an English-American author of science fiction and fantasy books. He is best known for his long-running novel series set in the fictional realm of Xanth. In addition to the 40 books in the Xanth series (with two more forthcoming), he has written numerous other science fiction and fantasy series, such as Incarnations of Immortality, and dozens of standalone novels.