In Greek mythology, Amphiaraus or Amphiaraos (/ˌæmfiəˈreɪəs/; Ancient Greek: Ἀμφιάραος, Ἀμφιάρεως, "very sacred") was the son of Oicles, a seer, and one of the leaders of the Seven against Thebes. Amphiaraus at first refused to go with Adrastus on this expedition against Thebes as he foresaw the death of everyone who joined the expedition. His wife, Eriphyle, eventually compelled him to go.
Amphiaraus married Eriphyle, the sister of his cousin Adrastus (the grandson of Melampus' brother Bias), and by her was the father of two sons, Alcmaeon and Amphilochus. From the geographer Pausanias, we hear of three daughters, Eurydice, Demonissa and Alcmena.
He reports seeing on the Chest of Kypselos at Olympia, a scene showing Amphiararaus' departure for the expedition against Thebes. Pausanias identifies (possible from inscriptions) other participants in the scene as: the infant Amphilochus, Eryphyle, her daughters, Eurydice and Demonissa, and a naked Alcmaeon. He goes on to add that the poet Asius also has Alcmena as a daughter of Amphiaraus and Eriphyle. According to Plutarch, Alexida was a daughter of Amphiaraus.
The Clytidae (alternate spelling "Klytidiai"), a clan of seers at Olympia, claimed to be the descendants of a Clytius, who they said was the son of Amphiaraus' son Alcmaeon. According to Roman legends, the founder of the town of Tibur (modern Tivoli) near Rome, was a son of Amphiaraus.
Amphiaraus was a seer, and greatly honored in his time. Both Zeus and Apollo favored him, and Zeus gave him his oracular talent. In the generation before the Trojan War, Amphiaraus was one of the heroes present at the Calydonian boar hunt.
The material of the tragic war of the Seven against Thebes was taken up from several points of view by each of the three great Greek tragic poets. Eriphyle persuaded Amphiaraus to take part in the raiding venture, against his better judgment, for he knew he would die. She had been persuaded by Polynices, who offered her the necklace of Harmonia, daughter of Aphrodite, once part of the bride-price of Cadmus, as a bribe for her advocacy. Amphiaraus reluctantly agreed to join the doomed undertaking, but aware of his wife's corruption, asked his sons, Alcmaeon and Amphilochus, to avenge his inevitable death by killing her, should he not return. He had foreseen the failure and for this reason did not agree to join first. On the way to the battle, Amphiaraus repeatedly warned the other warriors that the expedition would fail, and blamed Tydeus for starting it. He would eventually prevent Tydeus from being immortalized by Athena because of this. Despite this, he was possibly the greatest leader in the attack. During the battle, Amphiaraus killed Melanippus. In the battle, Amphiaraus sought to flee from Periclymenus, the "very famous" son of Poseidon, who wanted to kill him, but Zeus threw his thunderbolt, and the earth opened to swallow and conceal Amphiaraus and his chariot before Periclymenus could stab him in the back and thereby disgrace his honor. Thus becoming a chthonic hero, Amphiaraus was later propitiated and consulted at his sanctuary.
Alcmaeon killed his mother when Amphiaraus died. He was pursued by the Erinyes as he fled across Greece, eventually landing at the court of King Phegeus, who gave him his daughter Alphesiboea in marriage. Exhausted, Alcmaeon asked an oracle how to avoid the Erinyes and was told that he needed to stop where the sun was not shining when he killed his mother. That was the mouth of the river Achelous, which had been silted up. Achelous himself, god of that river, promised him his daughter, Callirrhoe in marriage if Alcmaeon would retrieve the necklace and clothes which Eriphyle wore when she persuaded Amphiaraus to take part in the battle. Alcmaeon had given these jewels to Phegeus who had his sons kill Alcmaeon when he discovered Alcmaeon's plan.
In a sanctuary at the Amphiareion of Oropos, northwest of Attica, Amphiaraus was worshipped with a hero cult. He was considered a healing and fortune-telling god and was associated with Asclepius. The healing and fortune-telling aspect of Amphiaraus came from his ancestry: he descended from the great seer Melampus. After making a sacrifice of a few coins, or sometimes a ram, at the temple, a petitioner slept inside and received a dream detailing the solution to the problem.
Etruscan tradition inherited by the Romans is doubtless the origin of a son for Amphiaraus named Catillus who escaped from the slaughter at Thebes and led an expedition to Italy, where he founded a colony where eventually appeared the city of Tibur (now Tivoli), named after his eldest son Tiburtus.
In the Python, the first book to describe Pyrrhonist philosophy, the book's author, Timon of Phlius first meets Pyrrho on the grounds of the temple of Amphiaraus. The symbolism of this may be due to Pyrrho being a member of the Clytidae, a clan of seers in Elis who interpreted the oracles of the Temple of Zeus at Olympia. The founder of the clan was claimed to be Clytius, the grandson of Amphiaraus.
^Parada, s.v. Amphiaraus; Hyginus, Fabulae 70, 73. Amphiaraus as the son of Oicles is attested as early as Homer, Odyssey, 15.243, see also Bacchylides, 9.10–24; Pindar, Pindar, Nemean, 9.13–17, 10.7–9
, Olympian 6.13–17, Pythian 8.39–55; Apollodorus, 3.6.3. For genealogical tables showing Amphiaraus and other of the descendants of Melampus, see Hard, p. 706, Table 13, and Grimal, p. 525, Table I.
^The descendants of Melampus included many notable seers, the most notable, after Melampus and Amphiaraus, being the Corinthian seer Polyidus; for a discussion see Hard, pp. 429–430.
^For a discussion of the dynastic history of the Argolid, see Hard, pp. 332–335.
^Apollodorus, 1.9.13, 3.6.2 (Eriphyle as wife), 3.7.2 (father of Alcmaeon and Amphilochus). Eriphyle as Amphiaraus' wife is alluded to by Homer, Odyssey 11.326–327 ("hateful Eriphyle, who took precious gold as the price of the life of her own lord"), 15.246–247 ("Amphiaraus" [who died at Thebes] "because of a woman's gifts"). For Eriphyle as wife, see also Pindar, Nemean 9.16–17; Diodorus Siculus, 4.65.6. For Alcmaeon as son see also Pausanias 6.17.6.
^Gantz, p. 508; Frazer, pp. 608–610; Pausanias, 5.17.7.
^Smith 1854, s.v. Tibur; Smith 1873, s.v. Amphiaraus; Grimal, s.v. Amphiaraus; Gaius Julius Solinus, Polyhistor 2.8–9; Pliny the Elder, Natural History, 16.87. Solinus, reports that, according to Cato, "Catillus the Arcadian", an officer of Evander, was the founder of Tibur, and Solinus goes on to say that this Catillus was the son of Amphiaraus, and that, on his grandfather Oicles' orders, he migrated to Italy, had three sons Tibertus, Coras and Catillus, expelled the Sicilia from the town of Sicani, and renamed the town Tibur after his eldest son Tibertus. Pliny the Elder, says that the founder of Tivoli was Amphiaraus' son Tiburnus. See also Virgil, Aeneid 7.670–672, Horace, Odes 1.18.2, 2.6.5.
^Pseudo-Apollodorus, Bibliotheca 1.8.2: "Atalanta was the first to shoot the boar in the back with an arrow, and Amphiaraus was the next to shoot it in the eye; but Meleager killed it by a stab in the flank...".
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