In Greek mythology, Orestes (//; Greek: Ὀρέστης [oréstɛːs]) was the son of Clytemnestra and Agamemnon. He is the subject of several Ancient Greek plays and of various myths connected with his madness and purification, which retain obscure threads of much older ones.
The Greek name Ὀρέστης, having become "Orestes" in Latin and its descendants, is derived from Greek ὄρος (óros, “mountain”) and ἵστημι (hístēmi, “to stand”), and so can be thought to have the meaning "stands on a mountain".
In the Homeric telling of the story, Orestes is a member of the doomed house of Atreus which is descended from Tantalus and Niobe. Orestes is absent from Mycenae when his father, Agamemnon, returns from the Trojan War with the Trojan princess Cassandra as his concubine, and thus not present for Agamemnon's murder by his wife Clytemnestra's lover, Aegisthus. Seven years later, Orestes returns from Athens and avenges his father's death by slaying both Aegisthus and his own mother Clytemnestra. 
According to Pindar, the young Orestes was saved by his nurse Arsinoe (Laodamia) or his sister Electra, who conveyed him out of the country when Clytemnestra wished to kill him. In the familiar theme of the hero's early eclipse and exile, he escaped to Phanote on Mount Parnassus, where King Strophius took charge of him. In his twentieth year, he was urged by Electra to return home and avenge his father's death. He returned home along with his friend Pylades, Strophius's son.
Sophocles and EuripidesEdit
In The Greek Myths the mythographer and poet Robert Graves translates and interprets the legends and myth fragments about Clytemnestra, Agamemnon, and Orestes, as suggesting a ritual killing of a "king" (Agamemnon) in very early religious ceremonies that were suppressed when patriarchy replaced the matriarchies of very ancient Greece. Graves interprets the sacrilege for which the Erinyes pursued Orestes, namely the killing of his mother, as representing symbolically the destruction of the ancient matriarchy and its replacement by patriarchy. He suggests that worship of the female deity Athena was retained as a cult because, despite the overthrow of matriarchy and woman-rule generally, it was too strong to be suppressed; Graves thinks she was recast as a child of Zeus (born without a mother, directly from Zeus' head) in the new patriarchal myths. As a character in Aeschylus' trilogy, Athena was given the previously incomprehensible role of justifying the overthrow, rationalizing as a "new way of justice" what would have been a horrific crime against the old, matriarchal religious customs. Graves, and many other mythographers including most notably those of the Cambridge Ritualist school, were influenced by The Golden Bough of James Frazer, who postulated that myths often reveal clues to ancient religious practices and rituals.
The story of Orestes was the subject of the Oresteia of Aeschylus (Agamemnon, Choephori, Eumenides), of the Electra of Sophocles, and of the Electra, Iphigeneia in Tauris, Iphigenia at Aulis (in which he appears as an infant carried by Clytemnestra) and Orestes, all of Euripides.
In Aeschylus's Eumenides, Orestes goes mad after the deed and is pursued by the Erinyes, whose duty it is to punish any violation of the ties of family piety. He takes refuge in the temple at Delphi; but, even though Apollo had ordered him to do the deed, he is powerless to protect Orestes from the consequences. At last Athena receives him on the acropolis of Athens and arranges a formal trial of the case before twelve judges, including herself. The Erinyes demand their victim; he pleads the orders of Apollo. Athena votes last announcing that she is for acquittal; then the votes are counted and the result is a tie, resulting in an acquittal according to the rules previously stipulated by Athena. The Erinyes are propitiated by a new ritual, in which they are worshipped as "Semnai Theai", "Venerable Goddesses", and Orestes dedicates an altar to Athena Areia.
As Aeschylus tells it, the punishment ended there, but according to Euripides, in order to escape the persecutions of the Erinyes, Orestes was ordered by Apollo to go to Tauris, carry off the statue of Artemis which had fallen from heaven, and to bring it to Athens. He went to Tauris with Pylades, and the pair were at once imprisoned by the people, among whom the custom was to sacrifice all Greek strangers to Artemis. The priestess of Artemis, whose duty it was to perform the sacrifice, was Orestes' sister Iphigenia. She offered to release him if he would carry home a letter from her to Greece; he refused to go, but bids Pylades to take the letter while he stays to be slain. After a conflict of mutual affection, Pylades at last yielded, but the letter brought about the recognition of brother and sister, and all three escaped together, carrying with them the image of Artemis.
Other literature and mediaEdit
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. He was said to have died of a snakebite in Arcadia. His body was conveyed to Sparta for burial (where he was the object of a cult) or, according to a Roman legend, to Aricia, when it was removed to Rome (Servius on Aeneid, ii. 116).
Before the Trojan War, Orestes was to marry his cousin Hermione, daughter of Menelaus and Helen. Things soon changed after Orestes committed matricide: Menelaus then gave his daughter to Neoptolemus, son of Achilles and Deidamia. According to Euripides' play Andromache, Orestes slew Neoptolemus just outside a temple and took off with Hermione. He seized Argos and Arcadia after their thrones had become vacant, becoming ruler of all the Peloponnesus. His son by Hermione, Tisamenus, became ruler after him but was eventually killed by the Heracleidae.
Orestes appears also to be a dramatic prototype for all persons whose crime is mitigated by extenuating circumstances. These legends belong to an age when higher ideas of law and of social duty were being established; the implacable blood-feud of primitive society gives place to a fair trial, and in Athens, when the votes of the judges are evenly divided, mercy prevails.
In The History by Herodotus, the Oracle of Delphi foretold that the Spartans could not defeat the Tegeans until they moved the bones of Orestes to Sparta. Lichas discovered the body, which measured 7 cubits long (around 10 feet, or 3.30 meters). Thus Orestes would have been a Giant.
For modern treatments see the Oresteia in the arts and popular culture.
Orestes and PyladesEdit
The intense relationship between Orestes and Pylades was presented by some Greek writers as romantic or homoerotic. A dialogue entitled Erotes ("Affairs of the Heart") and attributed to Lucian compares the merits and advantages of heterosexuality and homoeroticism, and Orestes and Pylades are presented as the principal representatives of homoerotic friendship:
Taking the love god as the mediator of their emotions for each other, they sailed together as it were on the same vessel of life...nor did they restrict their affectionate friendship to the limits of Hellas....as soon as they set foot on the land of the Tauride, the Fury of matricides was there to welcome the strangers, and, when the natives stood around them, the one was struck to the ground by his usual madness and lay there, but Pylades "did wipe away the foam and tend his frame and shelter him with a fine well-woven robe," thus showing the feelings not merely of a lover, but also of a father. But when it had been decided that, while one remained to be killed, the other should depart for Mycenae to bear a letter, each wished to remain for the sake of the other, considering that he himself lived in the survival of his friend. But Orestes refused to take the letter, claiming Pylades was the fitter person to do so, and thus showed himself almost to be the lover rather than the beloved.
The wider context of these remarks, describing the physical intimacy open to male pairs, indicates that the love exemplified by Orestes and Pylades would not necessarily have excluded even more overt homoerotic or homosexual elements. In 1734, George Frederic Handel's opera Oreste (based on Giangualberto Barlocci's Roman libretto of 1723), was premiered in London's Covent Garden. The fame of Lucian's works in the 18th century, as well as the generally well-known tradition of Greco-Roman heroic homoeroticism, made it natural for theatre audiences of that period to have recognized an intense, romantic, if not positively homoerotic quality, to the relationship between Orestes and Pylades.