Thyestes in Wikipedia

In Greek mythology, Thyestes (Θυέστης) was the son of Pelops, King of Olympia, and Hippodamia and father of Pelopia and Aegisthus. Thyestes and his twin brother, Atreus, were exiled by their father for having murdered their half-brother, Chrysippus, in their desire for the throne of Olympia. They took refuge in Mycenae, where they ascended to the throne upon the absence of King Eurystheus, who was fighting the Heracleidae. Eurystheus had meant for their lordship to be temporary; it became permanent due to his death in conflict...