Agamemnon, on his return from Troy, had been murdered by his wife Clytemnestra and her paramour Aegisthus, who had usurped the Mycenean throne. Orestes, then a child, had been rescued by his sister Electra, and sent into Phocis with the one servant who remained faithful to his old master. The son of Agamemnon now returns, being of a full age, accompanied by this same attendant and his friend Pylades, with whom he has already concerted a plan for taking vengeance on his father’s murderers, in obedience to the command of Apollo.
Orestes had been received in Phocis by Strophius, his father’s friend. Another Phocian prince, named Phanoteus, was a friend of Aegisthus.
