Iacchus

In Greek mythology, Iacchus (also Iacchos, Iakchos) (Greek: Ἴακχος) is a god particularly associated with the Eleusinian Mysteries. By various accounts he was the son of Zeus and Demeter, or the husband of Demeter, or the son of Zeus and Persephone identical with Zagreus. Iacchus was the torch bearer of the procession from Eleusinion to Eleusis on the sixth day of the greater mysteries, sometimes regarded as the herald of the 'divine child' of the Goddess, born in the underworld, and sometimes as the child itself. Iacchus was called "the light-bringing star of our nocturnal rite", giving him possible associations with Sirius and Sothis.

The most famous mention of Iacchus is in the play The Frogs by Aristophanes, where the Mystae (mystics) invoke him as a riotous dancer in the meadow, attended by the Charites, who "tosses torches" and is likened to a star bringing light to the darkness of the rites.

Iacchus' identification with Dionysus is demonstrated in a variety of sources. In a paean to Dionysus discovered at Delphi, the god is described as being named Iacchos at Eleusis, where he "brings salvation".Sophocles, in the paean in the play Antigone, names the god of the Mysteries at Eleusis as both Bacchos (Dionysus) and Iacchos. The 4th- or 5th-century poet Nonnus describes the Athenian celebrations given to the first Dionysus Zagreus son of Persephone, the second Dionysus Bromios son of Semele, and the third Dionysus Iacchus:

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