Alcimede

In Greek mythology, Alcimede ("mighty cunning") was one of the matrilineal Minyan daughters, the daughter of Clymene,  Minyas' daughter. She was the mother of Jason by Aeson, whom she met in the caves below Iolcus in Thessaly, a chthonic lair where the rightful king Aeson had been imprisoned by his evil half-brother Pelias.
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[Greek heroic] The mother of Jason.