Maia, the daughter of the Titan Atlas and the Oceanid nymph
Pleione.
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A goddess; this is likely, as her father Aeetes is the child of
Helios the Titan god of the sun, and his mother is Perse, Oceanid
nymph (a daughter of Oceanus Tethys); the mother of Medea is
Eidyia/Idyia another Oceanid nymph.
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The oceanid Perse was the mother of some of his children - wife
or lover, I don't know.
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The coupling of the god Thaumas and Oceanid Electra/Ozomene.