Greek Mythology Notes

Aegisthus

hero
Αἴγισθος
vengeance

Son of Thyestes who murdered Agamemnon to avenge his father, ruling Mycenae with Clytemnestra for seven years.

The Myth

He was the product of incest — fathered specifically as a weapon of revenge. An oracle told Thyestes that only a son born from his own daughter could avenge the cannibal feast. Thyestes raped his daughter Pelopia, and she bore Aegisthus. Raised in Atreus's household without knowing his true parentage, Aegisthus was sent to kill Thyestes but recognized his father by a sword. He then killed Atreus instead. While Agamemnon was at Troy, Aegisthus seduced Clytemnestra and ruled Mycenae. Together they murdered Agamemnon on his return. Orestes, Agamemnon's son, later killed both of them. Homer calls Aegisthus a coward; Aeschylus barely mentions him, giving the real agency to Clytemnestra.

Parents

Thyestes, Pelopia

Symbols

sword of recognitionthrone

Fun Fact

Homer uses Aegisthus as a warning to Odysseus — the faithful Penelope is contrasted with the murderous Clytemnestra.

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