In
Greek mythology,
Polyphemus (Πολύφημος) was the son of
Elatus (or
Poseidon) and
Hippea. According to one source, he was married to
Laonome, sister of
Heracles. As a
Lapith, he was remembered for having fought against the
Centaurs in the days of his youth. Years later, he joined the expedition of the
Argonauts. During their stay in
Bithynia, Polyphemus was the one to hear
Hylas cry as the youth was being dragged away by the
nymphs, and when he helped Heracles search for Hylas, both were left behind by the
Argo. Having settled in
Mysia, Polyphemus founded the city
Cius of which he became king. Later, however, he set out to search for his fellow Argonauts and died in the land of the
Chalybes. He was buried at the seashore under a poplar tree.