Something about the fertility of the land I think, other than that I can't help, sorry : (
Cronus and Rhea
Demeter's son is Persephone, who is also known as Kore. She is the goddess of the harvest and agriculture in Greek mythology.
Hades kidnapped Demeters daughter persephone
Grains
Demeter is the goddess of harvest or agriculture. Some sources states that she is also a goddess the favor the sacred law of marriage and order as well as the goddess of life and death.
Goddess Of Nature
Cronus and rhea
She's immortal.
Demeter's Roman counterpart is Ceres. She is the goddess of agriculture, fertility, and motherly relationships, similar to Demeter in Greek mythology.
Demeters sisters were hera, goddess of marrige, and hestia, goddess of the hearth.
"Whether the goddess was named after the city or the city after the goddess is an ancient dispute" (Burkert 1985:139)
Demeter was the goddess of the cornfield. She could control the growth of plantlife.