Demeter is the goddess of harvest cereal and corn. She was the daughter of Titans Cronus and Rhea. She used to have annual festivals in her name. Her daughter, Persephone (per-sě-funny), was kidnapped by the god of the Underworld, Hades. When this occurred, Demeter had to agree to allow her daughter to stay half a year with her and half with Hades.They say that during spring and summer, Demeter gets to see Persephone and during fall and winter she doesn't and is so depressed that the plants of the Earth go dormant.