Apollo gives an order through the Oracle at Delphi that Agamemnon's son, Orestes, is to kill Clytemnestra and Aegisthus, her lover.

Thyestes fathered Aegisthus with his own daughter, Pelopia, and this son vowed gruesome revenge on Atreus ' children.

Clytemnestra, Agamemnon's wife, had taken Aegisthus, son of Thyestes, as a lover.

Agamemnon's son Orestes later avenged his father's murder, with the help or encouragement of his sister Electra, by murdering Aegisthus and Clytemnestra ( his own mother ), thereby inciting the wrath of the Erinyes ( English: the Furies ), winged goddesses who tracked down egregiously impious wrongdoers with their hounds ' noses and drove them to insanity.

In Greek mythology, Aegisthus ( ; also transliterated as Aegisthos ) was the son of Thyestes and of Thyestes ' daughter, Pelopia.

Atreus, not knowing the baby's origin, took Aegisthus in and raised him as his own son.

Atreus in his enmity towards his brother sent Aegisthus to kill him ; but the sword which Aegisthus carried was the cause of the recognition between Thyestes and his son, and the latter returned and slew his uncle Atreus, while he was offering a sacrifice on the seacoast.

While Agamemnon, the son of Atreus, was absent on his expedition against Troy, Aegisthus seduced Clytemnestra, the wife of Agamemnon, and was so wicked as to offer up thanks to the gods for the success with which his criminal exertions were crowned.

After this event Aegisthus reigned seven years longer over Mycenae, until in the eighth Orestes, the son of Agamemnon, returned home and avenged the death of his father by putting the adulterer to death.

Many of the Greek wives were persuaded to betray their husbands, most significantly Agamemnon's wife, Clytemnestra, who was seduced by Aegisthus, son of Thyestes.

His wife Clytemnestra ( Helen's sister ) was having an affair with Aegisthus, son of Thyestes, Agamemnon's cousin who had conquered Argos before Agamemnon himself retook it.

After a back-and-forth struggle that featured adultery, incest and cannibalism, Thyestes gained the throne after his son Aegisthus murdered Atreus.

After his return to Greece, Orestes took possession of his father's kingdom of Mycenae ( killing Aegisthus ' son, Alete ) to which were added Argos and Laconia.

A shepherd found the infant Aegisthus and gave him to Atreus, who raised him as his own son.

In Greek mythology, Thyestes ( pronounced,, ) was the son of Pelops and Hippodamia, King of Olympia, and father of Pelopia and Aegisthus.

Thyestes did so and the son, Aegisthus, did kill Atreus.

A shepherd found the infant Aegisthus and gave him to Atreus, who raised him as his own son.

Seven or eight years after the death of Agamemnon, Agamemnon's son Orestes returned to Mycenae and, with the help of his cousin Pylades and his sister Electra, killed both their mother, Clytemnestra, and Aegisthus.

A shepherd found the infant Aegisthus and gave him to Atreus, who raised him as his own son.

He was killed treacherously by Aegisthus, but his wife escaped to Reggio and bore a son ( Polidoro ), from whom the epic hero Ruggiero is descended ( III, v, 18-27 ).

She saved his life by sending him to Strophius after the murder of Agamemnon, whereas Aegisthus killed her own son, taking him for Orestes.

This was one of the sources of the curse that destroyed his family: two of his sons, Atreus and Thyestes, killed a third, Chrysippus, who was his favorite son and was meant to inherit the kingdom ; Atreus and Thyestes were banished by him together with Hippodamia, their mother, who then hanged herself ; each successive generation of descendants suffered greatly by atrocious crimes and compounded the curse by committing more crimes, as the curse weighed upon Pelops ' children, grandchildren, and great-grandchildren including Atreus, Thyestes, Agamemnon, Aegisthus, Menelaus, and finally Orestes, who was acquitted by a court of law convened by the gods Athena and Apollo.

In Greek mythology, Aletes () was the son of Aegisthus and Clytemnestra, the king and queen of Mycenae.

Aegisthus took possession of the throne of Mycenae and ruled jointly with Thyestes.

Menelaus succeeded Tyndareus in Sparta, while Agamemnon, with his brother's assistance, drove out Aegisthus and Thyestes to recover his father's kingdom.

Aegisthus and Clytemnestra then ruled Agamemnon's kingdom for a time, Aegisthus claiming his right of revenge for Agamemnon's father Atreus having fed Thyestes his own children ( Thyestes then crying out " So perish all the race of Pleisthenes!

Aegisthus and Thyestes thereafter ruled over Mycenae jointly, exiling Atreus ' sons, Agamemnon and Menelaus to Sparta, where King Tyndareus gave the pair his daughters, Clytemnestra and Helen, to take as wives.

Homer appears to know nothing of all these tragic occurrences, and we learn from him only that, after the death of Thyestes, Aegisthus ruled as king at Mycenae and took no part in the Trojan expedition.

However, when Thyestes returns, Atreus secretly kills Thyestes ' sons, Pelopia and Aegisthus.

Only as he entered adulthood did Thyestes reveal the truth to Aegisthus, that he was both father and grandfather to the boy.

Only as he entered adulthood did Thyestes reveal the truth to Aegisthus, that he was both father and grandfather to the boy and that Atreus was his uncle.

He killed Clytemnestra and Aegisthus and succeeded to his father's throne.

In Euripides ’ other story about Iphigenia, Iphigenia in Tauris, the play takes place after the sacrifice and after Orestes has killed Clytemnestra and Aegisthus.

Aegisthus and Clytemnestra also killed Cassandra, Agamemnon's war prize, a prophet-priestess of Troy.

Pylades and Orestes killed Clytemnestra and Aegisthus ( in some accounts with Electra helping ).

Aegisthus then killed Atreus, although not before Atreus had two sons, Agamemnon and Menelaus.

Aegisthus then killed Atreus.

Aegisthus then killed Atreus and restored the kingdom to Thyestes.

She later kills Agamemnon ( Brian Cox ) during the Sack of Troy ; in classical mythology Agamemnon is killed by his wife Clytemnestra and her lover Aegisthus.

After Aegisthus and Clytemnestra are killed on stage, Orestes is denied the crown and banished.

They escort Aegisthus off set to be killed at the hearth, the same location Agamemnon was slain.

* Aletes ( son of Aegisthus ), who was killed by Orestes

The play recounts the story of Orestes and his sister Electra in their quest to avenge the death of their father Agamemnon, king of Argos, by killing their mother Clytemnestra and her husband Aegisthus, who had deposed and killed him.

Electra has been treated as a servant girl since her mother and Aegisthus killed her father.