 He was either a mortal prince, the eldest son of King Celeus of Eleusis, or, according to Pseudo-Apollodorus' "Bibliotheca" (I.V.2), the son of Gaia and Oceanus.While Demeter (in the guise of an old woman named Doso) was searching for her daughter Persephone, who had been abducted by Hades, she received a hospitable welcome from Celeus.He asked her to nurse Demophon—"killer of men", a counterpart to Triptolemus— and Triptolemus, his sons by Metanira.