Cleopatra by H. Rider Haggard

Cleopatra Being an Account of the Fall and Vengeance of Harmachis is a novel written by the author H. Rider Haggard, the author of King Solomon's Mines and She.The story is set in the Ptolemaic era of Ancient Egyptian history and revolves around the survival of a dynasty bloodline protected by the Priesthood of Isis. The main character Harmachis (the living descendant of this bloodline) is charged by the Priesthood to overthrow the supposed impostor Cleopatra, drive out the Romans and restore Egypt to its golden era.