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
Polydorus of Sparta Polydorus of Sparta Polydorus (Polydoros) (; reigned from c. 700 to c. 665 BC) was the 10th Agiad dynasty king of Sparta. He was succeeded by king Eurycrates. Polydorus is known for supposedly supplementing the 'Great Rhetra' of Sparta. According to the Greek biographer Plutarch (writing roughly 700 years after the Spartan king), Polydorus and his co-king Theopompus changed the constitution of Sparta so that the Kings and the Gerousia (28 chosen men above the age of 60) could veto decisions made by the Spartan Apella (the male citizen body). Classicists and historians find it difficult to fully understand the