Megapenthes of Sparta was Iphiloche or Echemela. At the death of their father, Megapenthes and his brother or half-brother Nicostratus together seized the throne of Sparta and drove Helen out. They were depicted on the throne in Amyclae riding the same horse. Megapenthes of Sparta In Greek mythology, Megapenthes (; Ancient Greek: Μεγαπένθης "Megapénthēs"), a Spartan prince and son of Menelaus, who ruled after his father's death and sent his mother (or step-mother) Helen into exile. In some legends, Helen was his mother; in most, however, he was Menelaus's son by a concubine, Pieris or Tereis, and was born during the Trojan War.
History of Sparta backing of Egypt. However Aratus, the leader of the Achaean League, decided to ally with Achaea's enemy, Macedonia. With Egypt deciding to cut financial aid Cleomenes decided to risk all on one battle. In the resulting Battle of Sellasia in 222 BC, Cleomenes was defeated by the Achaeans and Macedonia. Antigonus III Doson, the king of Macedon ceremonially entered Sparta with his army, something Sparta had never endured before. The ephors were restored, whilst the kingship was suspended. At the beginning of the Social War in 220 BC, envoys from Achaea unsuccessfully attempted to persuade Sparta to take the field