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
Sparta (mythology) Sparta (mythology) In Greek mythology, Sparta (Doric Greek: Σπάρτα, "Spártā"; Attic Greek: Σπάρτη, "Spártē") was the daughter of King Eurotas of Laconia. She was wife of King Lacedaemon (also her uncle) by whom she became the mother of Amyclas and Eurydice, wife of King Acrisius of Argos. The city of Sparta is said to have been named after her; however, the city was often called Lacedaemon as well. The two names were used interchangeably. Sparta was represented on a sacrificial tripod at Amyclae. She was said to be a fair and beautiful maiden worth defending and protecting at all costs.