Cleomenes III died in -219.

According to Herodotus , Cleomenes's young daughter Gorgo warned Cleomenes not to trust a man who threatened to corrupt him . Aristagoras promised the Spartan king Cleomenes an easy victory over the Persians in addition to Persian riches .

u mean king of sparta, cleomenes III ??

Cleomenes III, King of Sparta died in 219 BC.

In 222 BC, Cleomenes was defeated in the Battle of Sellasia by the Achaeans, who received military aid from Antigonus III Doson of Macedon. Cleomenes left Sparta and sought refuge at Alexandria with Ptolemy Euergetes of Egypt, hoping for assistance to regain his throne.

However, when Ptolemy died, his son and successor, Ptolemy Philopator neglected Cleomenes and eventually put him under house arrest. Together with his friends, he escaped his house arrest in 219 BC and tried to incite a revolt. When he received no support from the population of Alexandria, he avoided capture by committing suicide. Thus died the man who nearly conquered all of the Peloponnese and is described by William Smith as "the last truly great man of Sparta, and, excepting perhaps Philopoemen, of all Greece."

The Cleomenean War was fought by Sparta and its ally, Elis, against the Achaean League and Macedon. The war ended in a Macedonian and Achaean victory. In 235 BC, Cleomenes III ascended the throne of Sparta and began a program of reform aimed at restoring traditional Spartan discipline while weakening the influence of the ephors. When, in 229 BC, the ephors sent Cleomenes to seize a town on the border with Megalopolis, the Achaeans declared war. Cleomenes responded by ravaging Achaea. At Mount Lycaeum he defeated an army under Aratus of Sicyon, and then routed a second army near Megalopolis. Meanwhile, in domestic politics, he ordered the assassination of the ephors. In quick succession, Cleomenes cleared the cities of Arcadia of their Achaean garrisons, before crushing another Achaean force at Dyme. Facing Spartan domination of the League, Aratus was forced to turn to Antigonus III Doson of Macedon and request that he assist the Achaeans' efforts to defeat the Spartans. Cleomenes eventually invaded Achaea, seizing control of both Corinth and Argos. When Antigonus arrived in the Peloponnese, however, Cleomenes was forced to retreat to Laconia. He fought the Achaeans and the Macedonians at Sellasia, but the Spartans were routed. Cleomenes then fled to the court of his ally, Ptolemy III of Egypt, where he ultimately committed suicide.

Leonidas was one of four royal sons of the Spartan king Anaxandridas, of the Agiad branch of the Spartan monarchy (Sparta had two royal houses, the other being the Eurypontid; and two kings at any given time). He succeeded his brother Cleomenes I, in 488 BC. His reign was only eight years long, and is notable only for his actions at Thermopylae. He inherited from his brother an aggressive anti-Persian foreign policy; which he seems to have carried out to the end. Leonidas was married to his niece, Gorgo, the daughter of Cleomenes. He left one son that we know of; who came to the thone as a child upon Leonidas' death at Thermopylae (in the early years of his reign an uncle, Pausanias, served as regent for him). At Thermopylae ("The Hot Gates") he responded to the Persian demand that the Spartans "lay down their arms (weapons)", with the Greek words Molon Labe: "Come and take them!" After the battle, the Persians mutilated his body, causing wide-spread horror and hatred in Greece towards the Persian invaders. Years after his death, a hero cult was set up in his honor.