Peleus. In Greek mythology, Peleus was a hero, king of Phthia and the father of Achilles. His myth was already known to the hearers of Homer in the late 8th century BC. Peleus was the son of Aeacus, king of the island of Aegina, and Endeis, the oread of Mount Pelion in Thessaly. He married the sea-nymph Thetis with whom he fathered Achilles. Peleus and his brother Telamon were friends of Heracles, and served in Heracles' expedition against the Amazons, his war against King Laomedon, and his quest for the Golden Fleece alongside Jason and the Argonauts. Though there were no further kings in Aegina, the kings of Epirus claimed descent from Peleus in the historic period. Peleus and his brother Telamon killed their half-brother Phokos, perhaps in a hunting accident and certainly in an unthinking moment, and fled Aegina to escape punishment. In Phthia, Peleus was purified by the city's ruler, Eurytion, and then married the latter's daughter, Antigone, by whom he had a daughter, Polydora. Eurytion received the barest mention among the Argonauts yet not together, nor from one place, for they dwelt far apart and distant from Aigina; but Peleus accidentally killed Eurytion during the hunt for the Calydonian Boar and fled from Phthia. Peleus was purified of the murder of Eurytion in Iolcus by Acastus. Acastus' wife, Astydameia, fell in love with Peleus and after he scorned her, she sent a messenger to Antigone to tell her that Peleus was to marry Acastus' daughter. As a result, Antigone hanged herself. Astydameia then told Acastus that Peleus had tried to rape her. Acastus took Peleus on a hunting trip atop Mount Pelion and once Peleus fell asleep, Acastus hid his sword away and abandoned him on the mountainside. Peleus woke up and as a group of centaurs was about to attack him, the wise centaur Chiron, or, according to another source, Hermes, returned his sword to him and Peleus managed to escape. He pillaged Iolcus and dismembered Astydameia, then marched his army between the rended limbs. Acastus and Astydamia were dead and the kingdom fell to Jason's son, Thessalus. After Antigone's death, Peleus married the sea-nymph Thetis. He was able to win her with the aid of Proteus, who told Peleus how to overcome Thetis' ability to change her form. Their wedding feast was attended by many of the Olympian gods. As a wedding present, Poseidon gave Peleus two immortal horses: Balius and Xanthus. During the feast, Eris, in revenge for not being invited, produced the Apple of Discord, which started the quarrel that led to the Judgement of Paris and eventually the Trojan War. The marriage of Peleus and Thetis produced seven sons, six of whom died in infancy. The only surviving son was Achilles. Thetis attempted to render her son Achilles invulnerable. In the well-known version, she dipped him in the River Styx, holding him by one heel, which remained vulnerable. In an early and less popular version of the story, Thetis anointed the boy in ambrosia and put him on top of a fire to burn away the mortal parts of his body. She was interrupted by Peleus and she abandoned both father and son in a rage, leaving his heel vulnerable. A nearly identical story is told by Plutarch, in his On Isis and Osiris, of the goddess Isis burning away the mortality of Prince Maneros of Byblos, son of Queen Astarte, and being likewise interrupted before completing the process. Later on in life, Achilles is killed by Paris when he is shot in his vulnerable spot, the heel. This is where the term Achilles' heel is derived from. Peleus gave Achilles to the centaur Chiron, to raise on Mt. Pelion, which took its name from Peleus. In the Iliad, Achilles uses Peleus' immortal horses and also wields his father's spear. Though the tomb of Aeacus remained in a shrine enclosure in the most conspicuous part of the port city, a quadrangular enclosure of white marble sculpted with bas-reliefs, in the form in which Pausanias saw it, with the tumulus of Phocus nearby, there was no temenos of Peleus at Aegina. Two versions of Peleus' fate account for this; in Euripides' Troades, Acastus, son of Pelias, has exiled him from Phthia; and subsequently he dies in exile; in another, he is reunited with Thetis and made immortal. In antiquity, according to a fragment of Callimachus' lost Aitia, there was a tomb of Peleus in Ikos, an island of the northern Sporades; there Peleus was venerated as king of the Myrmidons and thereturn of the hero was celebrated annually. And there was his tomb, according to a poem in the Greek Anthology.