Thyestes killed Atreus. While Thyestes ruled Mycenae, the sons of Atreus, Agamemnon and Menelaus, were exiled to Sparta. There, King Tyndareus accepted them as the royalty that they were. Shortly after, he helped the brothers return to Mycenae to overthrow Thyestes, forcing him to live in Cytheria, where he died. As a token of good will and allegiance, King Tyndareus offered his daughters to Agamemnon and Menelaus as wives, Clytemnestra and Helen respectively. When Agamemnon left Mycenae for the Trojan War, Aegisthus seduced Agamemnon's wife, Clytemnestra, and the couple plotted to kill her husband upon his return. They succeeded, killing Agamemnon
History of Sparta experienced a period of lawlessness and civil strife, later testified by both Herodotus and Thucydides. As a result, they carried out a series of political and social reforms of their own society which they later attributed to a semi-mythical lawgiver, Lycurgus. These reforms mark the beginning of the history of Classical Sparta. It is during the reign of King Charillos, that most ancient sources place the life of Lycurgus. Indeed, the Spartans ascribed their subsequent success to Lycurgus, who instituted his reforms at a time when Sparta was weakened by internal dissent and lacked the stability of a united and