Xerxes

Xerxes the Great (Xerxes I of Persia) was emperor of the Persian Achaemenid Empire in the 5th Century BCE (and therefore a historical, rather than mythological, personage). He was the son of Darius the Great and his wife, Atossa, and a descendant of Cyrus the Great. He suppressed revolts in Egypt and Babylon, and also sought to punish the Athenians for their interference in the Ionian Revolt and their earlier victory over the Persians at Marathon. He won a famous victory over the Greeks at the Battle of Thermopylae, but then was defeated at the Battle of Salamis, and forced to retire back to Persia. Eventually, he was murdered by his own counsellor, Artabanus.