Although early authors, such as Aeschylus refer in passing to Menelaus’ early life, detailed sources are quite late, post-dating 5th-century BC Greek tragedy. According to these sources, Menelaus' father, Atreus, had been feuding with his brother Thyestes over the throne of Mycenae. After a back-and-forth struggle that featured adultery, incest, and cannibalism, Thyestes gained the throne after his son Aegisthus murdered Atreus. As a result, Atreus’ sons, Menelaus and Agamemnon, went into exile. They first stayed with King Polypheides of Sicyon, and later with King Oeneus of Calydon. But when they thought the time was ripe to dethrone Mycenae’s hostile ruler, they returned. Assisted by King Tyndareus of Sparta, they drove Thyestes away, and Agamemnon took the throne for himself.