In Greek mythology, Atreus (Ἀτρεύς) was the son of Pelops and Hippodamia, a king of Mycenae, and the father of Agamemnon and Menelaus. Collectively, his descendants are known as Atreidai or Atreidae. Atreus and his twin brother Thyestes were exiled by their father for murdering their half-brother Chrysippus in their desire for the throne of Olympia. They took refuge in Mycenae, where they ascended to the throne in the absence of King Eurystheus, who was fighting th… (More on Atreus)