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Cleomenes III ( ) was the King of Sparta from 235-222 BC. He succeeded to the Agiad throne of Spartamarker after his father, Leonidas II in 235 BC.

From 229 BC to 222 BC, Cleomenes waged war against the Achaean League under Aratus of Sicyon. Domestically, he is known for his attempt to reform the Spartan state. After being defeated by the Acheans in the Battle of Sellasia in 222 BC, he fled toPtolemaic Egypt. After a failed revolt in 219 BC, he committed suicide.

Early life

Cleomenes was born in Sparta to King Leonidas II and his wife Cratesicleia and was part of the Agiad dynasty. The exact year of Cleomenes' birth is unknown but historian Peter Green puts it between 265 BC and 260 BC. As part of his agoge and in keeping with the native pederastic tradition he was the aites (hearer) of Xenares. Later he would be the eispnelos (inspirer) of Panteus, who died with him a heroic death.

In around 242 BC, Leonidas was exiled from Sparta and forced to seek refuge in the temple of Athena after opposing the reforms of the Eurypontid King, Agis IV. Cleomenes' brother-in-law, Cleombrotus, who was a supporter of Agis, became king. Meanwhile, Agis, having started his reforms went on a campaign near the Isthmus of Corinthmarker which presented Leonidas with an opportunity to regain his throne. He quickly desposed of Cleombrotus and when Agis returned to Sparta, he had him captured and executed.

Following the execution of Agis, Cleomenes - who was around eighteen at the time - was made by his father to marry Agis' widow, Agiatis, who was a wealthy heiress. According to legend, Cleomenes was hunting when his father sent him a message telling him to return immediately to Sparta. When he returned to the city, he saw that it was being decorated for a wedding and when he asked his father who was getting married, his father replied that Cleomenes was. It was reported that Cleomenes was doubtful about the marriage because his father had Agiatis' husband executed. The marriage worked out and Agiatis told Cleomenes about Agis and his plan.

As king

Early years

"Upon this, Cleomenes wrote to him, in a familiar way, desiring to know, "Whether he marched the night before." Aratus answered, "That, understanding his design to fortify Belbina, the intent of his last motion was to prevent that measure." Cleomenes humorously replied, "I am satisfied with the account of your march; but should be glad to know where those torches and ladders were marching."
The conversation between Cleomenes and Aratus according to Plutarch.

On the death of his father, Cleomenes ascended the throne of Sparta in 235 BC. Cleomenes had been inspired by Agis and began reforms. Meanwhile, the Achaean League under the command of Aratus of Sicyon was trying to unite all of the Peloponnesemarker. Upon hearing of Leonidas' death, Aratus began attacking the cities of Arcadiamarker which bordered Achaea. Plutarch says that Aratus made these moves to see how Sparta stood inclined.

In 229 BC, the cities of Tegeamarker, Mantineamarker, Caphyae and Orchomenus - who where allied with the Aetolian League - come over to Sparta. Historians Polybius and Sir William Smith claim that Cleomenes seized these cities by treachery; however the translator of Plutarch on Sparta, Richard Talbert, claims he did so at their own request. Later that year, the ephors sent Cleomenes to seize Athenaeum, a border fort on the Spartan border with Megalopolismarker which was being disputed by both cities; Cleomenes seized the fort and fortified it. Meanwhile, the Achaean League summoned a meeting of its assembly and declared war against Sparta. In retaliation for fortifing the fort, Aratus made a night attack on Tegea and Orchomenus but when his supporters on the inside failed to help, he retreated hoping to remain unnoticed.

Cleomenes discovered the attempted night attack, and sent a message to Aratus asking the purpose of the expedition. Aratus replied that he had come to stop Cleomenes fortifing Athenaeum. Cleomenes responded to this by saying: "if it's all the same to you, write and tell me why you brought along those torches and ladders."

Cleomenean War

Cleomenes advanced into Arcadia before being called back by the ephors. When Aratus captured Caphyae, the ephors sent him out again. He ravaged the territory of Argosmarker with an army of 5,000 men before being confronted by the new strategos of the Achaean League, Aristomachos of Argos, and his army of consisting of 20,000 infantry and 1,000 cavalry at Pallantium. Aratus, who accompanied Aristomachos as an adviser, advised him to retreat. Smith agrees with Aratus' assessment that 20,000 Achaeans were no match for 5,000 Spartans.

This success greatly encouraged Cleomenes and when he heard that Aratus was attacking Sparta's ally, Elis, he set off to confront them. The Spartan army fell upon the Achaean army near Mount Lycaeum and routed it. Aratus took advantage of a rumour saying that he had been killed in the battle and seized Mantinea. His blow took the war spirit out of the Spartans and they began to oppose Cleomenes' war effort.

Meanwhile, the Eurypontid King of Sparta, Eudamidas III, who was the son of Agis IV and Agiatis died. Cleomenes' recalled his uncle, who had fled after Agis' execution to Messenemarker to assume the throne. However, as soon as he returned to Sparta he was assassinated. Cleomenes' part in the assassination is unknown with Polybius claiming that he ordered it, but Plutarch disagrees.

Having bribed the ephors to allow him to continue campaigning, Cleomenes advanced into the territory of Megalopolis and started to besiege the village of Leuctramarker. As Cleomenes was besieging the village, an Achaean army under the command of Aratus attacked the Spartans. In the initial attack, the Spartans were repelled. However, Lydiadas of Megalopolis, the cavalry commander, disobeyed Aratus' order not to pursue the Spartans. As the cavalry scattered as they were trying to cross some difficult terrain, Cleomenes' skirmishers managed to defeat them. Encouraged by this counter-attack, the Spartans charged the main body of the Achaean army and routed them.

Confident of his strong position, Cleomenes began plotting against the ephors. After gaining the support of his stepfather, he embarked his opponents with him on a whirlwind military expedition and when they requested to stay in Arcadia due to exhaustion he returned to Sparta to carry out his plan. When he reached the city, he sent some of his loyal followers to kill the ephors. Four of the ephors were killed, while the fifth, Agylaeus, managed to escape and seek sanctuary in a temple.

Having removed the ephors, Cleomenes began his reforms. He first handed over all his land to the state; he was soon followed by his stepfather and his friends and the rest of the citizens. He divided up all the land and gave an equal lot to every citizen. To increase the declining Spartan citizen body, he made some perioeci, citizens. He trained 4,000 hoplites and restored the ancient Spartan military and social discipline as well as equipping his army with the Macedonian sarissa (pike) which greatly strengthened the army.

Defeat and exile

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 Alexandriamarker, 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."

Cleomenes in Fiction

For an idiosyncratic but historically accurate and superbly written fictional telling of Cleomenes' life and death, see Naomi Mitchison's "The Corn King and The Spring Queen" (reference given).


  1. Green, Alexander to Actium: The Historical Evolution of the Hellenistic Age, 255
  2. John Addington Symonds, A Problem in Greek Ethics, X p.14
  3. Plutarch, Life of Cleomenes 3.2, 37.13
  4. Green, Alexander to Actium: The Historical Evolution of the Hellenistic Age, 153
  5. Guerber " Death of Agis"
  6. Haaran and Poland " Cleomenes III"
  7. Plutarch, Life of Cleomenes, 4
  8. Plutarch, Life of Cleomenes, 4
  9. Polybius 2.46
  10. Smith, Dictionary of Greek and Roman Biography and Mythology " Cleomenes III"
  11. Plutarch, Life of Cleomenes, 5
  12. Plutarch, Life of Cleomenes, 5
  13. Polybius 5.37
  14. Plutarch, Life of Cleomenes, 6
  15. Plutarch, Life of Cleomenes, 7
  16. Plutarch, Life of Cleomenes, 8
  17. Green, Alexander to Actium: The Historical Evolution of the Hellenistic Age, 257
  18. Plutarch, Life of Cleomenes, 11


Primary sources

  • span id=Plutarch>Plutarch, translated by Richard Talbert, (1988). Life of Agis. New York: Penguin Classics. ISBN 0-14-044463-7.
  • Plutarch, translated by Richard Talbert, (1988). Life of Cleomenes. New York: Penguin Classics. ISBN 0-14-044463-7.
  • Plutarch, translated by Richard Talbert, (1988). Plutarch on Sparta. New York: Penguin Classics. ISBN 0-14-044463-7
  • Polybius, translated by Frank W. Walbank, (1979). The Rise of the Roman Empire. New York: Penguin Classics. ISBN 0-14-044362-2.

Secondary Sources

  • Peter Green, (1990). Alexander to Actium: The Historical Evolution of the Hellenistic Age. Los Angeles: University of California Press. ISBN 0-500-01485-X.


  • Mitchison, Naomi "The Corn King and the Spring Queen", Canongate Books Ltd; New edition (1 Jan 2001) ISBN 0862412870 ISBN 978-0862412876

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