Proserpina

Proserpina, also known as Proserpine or Libera, was a Roman goddess of fertility, grain, wine and agriculture, and the queen of the Roman Underworld. She was the daughter of Ceres.

Proserpina was eventually abducted by Pluto, the king of the Underworld, who wanted a bride. Ceres was upset of this, and as goddess of agriculture and fertility, refused to fulfil her duties, which led to massive droughts and famines in the realm of the humans. Jupiter, worried about humanity, contacted Pluto and begged him to release Proserpina. Pluto agrees, but it is also revealed that Proserpina had eaten a pomegranate, which confined her to the Underworld for half of the year.

The time of the year when Ceres and Proserpina would be together became spring and summer, while the time when she returned to the Underworld would be autumn and winter.