was the daughter of Tyndareus, sister of Helen, and wife of Agamemnon.
When Agamenon returned to Mycenae from the Trojan War, she (or
she and her lover Aegisthus) killed him and the Trojan princess
Cassandra whom Agamennon had brought with him from Troy. Her
son Orestes eventually returned to Mycenae and murdered his mother
to avenge the death of his father. A central figure in Aeschylus'
tragedy Agamemnon, she is also found in the works of other
major classical Greek writers as well as in paintings and sculpture
since the sixth century BCE.