Khsrish IV (pronounced "Xerxes" by Athenians) was the King of Kings of Persia four centuries after the conquest of Yauna by his ancestor, Khsrish I, the "Conqueror". Khsrish IV tasked a eunuch named Mithredath to learn more about the conquest. However, while Mithredath was researching the answer, Khsrish IV was overthrown by his cousin Kurash and slain.