Cleomenes III, born in two hundred sixty BC, was a prominent ruler of Sparta, serving as one of its two kings from two hundred thirty-five to two hundred twenty-two BC. A member of the Agiad dynasty, he ascended to the throne following his father, Leonidas II. His reign is marked by significant attempts to reform the Spartan state, reflecting his ambition to revitalize the ancient city-state.
During his rule, Cleomenes engaged in a fierce conflict against the Achaean League, led by Aratus of Sicyon, from two hundred twenty-nine to two hundred twenty-two BC. His military campaigns were characterized by both strategic brilliance and notable challenges, as he sought to expand Spartan influence and restore its former glory.
However, Cleomenes faced a turning point in two hundred twenty-two BC when he was defeated by the Macedonians at the Battle of Sellasia. This defeat marked a significant decline in his fortunes, prompting him to flee to Ptolemaic Egypt in search of refuge. Despite his efforts to regain power, a failed revolt in two hundred nineteen BC led him to take the tragic decision to end his own life.