Thalia (nymph)

In Greek mythology, Thalia or Thaleia ( or ; Θάλεια Tháleia, "the joyous, the abundance", from θάλλειν / thállein, "to flourish, to be green") was a nymph daughter of Hephaestus, and the mother of the Palici. She was also given as an anthropomorphic secondary deity of plant life and shoots, possibly as the culmination of the transmission of knowledge on volcanic ash's use as a fertiliser, characteristic of ancient viticulture in volcanic soils such as those of the island of Santorini.

Mythology
Macrobius's Saturnales (song V) states how Zeus made love to her near the river Symethe on Sicily. She buried herself in the ground to avoid Hera's jealousy. Her twin children, the Palici, were thus born under the earth, though other authors make the Palici the sons of Hephaestus or Adranus.