In Greek mythology, Sidero ("the Iron One") was the second wife of Salmoneus and stepmother of the twins Pelias and Neleus. Greek mythology is the body of stories belonging to the ancient Greeks concerning their gods and Heroes the nature of the world and the origins and significance For the shrimp genus of this name go to Salmoneus. In Greek mythology, Salmoneus (Σαλμωνεύς was the son of Aeolus Pelias was king of Iolcus in Greek mythology, the son of Tyro, daughter of Aleus, and of either Poseidon or Cretheus Neleus was the son of Poseidon and Tyro, brother of Pelias. Tyro was married to Cretheus (with whom she had one son Aeson) but loved She mistreated the twins' mother Tyro horribly, incurring their wrath when they reached adulthood. Tyro A beginner or learner in anything one who has mastered the rudiments only of any branch or knowledge Although Sidero fled from them into Hera's district, Pelias nevertheless murdered her atop the altar to Hera. In the Olympian pantheon of classical Greek Mythology, Hera (ˈhɪərə or /ˈhɛrə/ Greek) or Here ( in Ionic and Homer