Which lady XXX was born to?
Inachus
Though Jerome and Eusebius (both citing Castor of Rhodes), and as even late as 1812 John Lemprière euhemeristically asserted that he was the first king of Argos, and Robert Graves that he was a descendant of Iapetus, most modern mythologists understand Inachus as one of the river gods, all sons of Oceanus and Tethys and thus to the Greeks part of the pre-Olympian or ``Pelasgian'' mythic landscape; in Greek iconography, Walter Burkert notes, the rivers are represented in the form of a bull with a human head or face.
Tethys