There can be little doubt of this story of Ceres and Proserpine being an allegory. Proserpine signifies the seed-corn which when cast into the ground lies there concealed—that is, she is carried off by the god of the underworld. It reappears—that is, Proserpine is restored to her mother. Spring leads her back to the light of day.
Milton alludes to the story of Proserpine in “Paradise Lost,” Book IV.:
“. . . Not that fair field
Of Enna where Proserpine gathering flowers,
Herself a fairer flower, by gloomy Dis
Was gathered, which cost Ceres all that pain
To seek her through the world,—
. . . might with this Paradise