Orestes was the son who avenged his murdered father by killing his own mother — and was hunted to the edge of madness for it. His story is the climax of the great curse of the House of Atreus, and the vehicle for one of the most important transformations in Greek thought: the moment when blind blood-vengeance gave way to the rule of law.
The Cursed Inheritance
Orestes was the son of Agamemnon, the king who led the Greeks to Troy, and Clytemnestra. While Agamemnon was away at war, Clytemnestra (nursing her hatred for his sacrifice of their daughter Iphigenia) took a lover and, on the king's triumphant return, murdered him in his bath. Orestes, still a boy, was sent away for safety — growing up in exile with the knowledge that his mother had killed his father.
The Unbearable Command
Grown, Orestes faced an impossible duty. The code of his world demanded that a son avenge his murdered father — and the oracle of Apollo explicitly commanded him to do so. But the murderer was his own mother. To obey the gods and the code of vengeance, he would have to commit the most unnatural crime imaginable: matricide. With his sister Electra and his loyal friend Pylades, Orestes returned in secret, and killed both his mother's lover Aegisthus and then Clytemnestra herself. He had avenged his father by becoming a mother-killer.
Hunted by the Furies
For the crime of spilling kindred blood, the ancient Erinyes (Furies) rose to torment him, hounding him across the world, driving him toward madness, giving him no rest. Here was the terrible logic of the old order laid bare: vengeance demanded the killing, and the killing demanded vengeance in turn — an endless, unbreakable cycle of blood for blood.
The Birth of Justice
The cycle was broken at last not by more blood, but by law. The goddess Athena intervened, establishing the first court of justice (the Areopagus in Athens) to try Orestes by reason and the vote of a jury, rather than by the Furies' automatic vengeance. With Apollo speaking in his defence and Athena casting the deciding vote, Orestes was acquitted; the Furies were appeased and transformed into the “Kindly Ones.” In Aeschylus's great trilogy, this is nothing less than the foundational myth of civilisation itself — the moment humanity replaced the blood feud with the courtroom.
He ended one curse with a crime and another with a trial — and in his acquittal, the world traded vengeance for justice.