Mnemosyne — Classical Greek Myth Library

Chiron, the wise Centaur who reared heroes, is not of Ixion’s cloud-born herd. Classical handbook and Argonautic digression tell that Cronus, pursuing (or lying with) the Oceanid Philyra, was surprised by Rhea and changed himself into a stallion; Philyra, in some tellings, became a mare. From that union was born Chiron—a centaur in form but immortal and just, son of a Titan rather than of the violent Centaur stock. Philyra, ashamed of the monstrous child (or of the shape-changed mating), prayed for release and was transformed into the linden tree that bears her name (*philyra*). Chiron dwelt on Pelion, skilled in medicine, music, and prophecy, host and tutor to Asclepius, Jason, Achilles, and others. His birth-myth explains why he alone among horse-men is pious and why his genealogy can touch the Olympian order: Titan blood and Oceanid mother, not the drunken violence of Ixion’s brood. Catalogue the Cronus–Philyra aetiology as Chiron’s origin, distinct from the Centauromachy and from Chiron’s later self-surrender of immortality.