Who is Metaneire?

Metaneira is a character from Greek mythology, notably featured in the Eleusinian Mysteries. She is the daughter of Celeus, the king of Eleusis, and the mother of Demeter's daughter, Persephone. Metaneira plays a significant role in the myth of Demeter, as she offers hospitality to the goddess when Demeter searches for Persephone after her abduction by Hades. In gratitude, Demeter attempts to make Metaneira's son, Demophon, immortal by secretly feeding him ambrosia.