You probably know the famous story of how Hades abducted Persephone, the daughter of Demeter, goddess of agriculture. As she was looking everywhere for Persephone, Demeter came to the court of King Celeus. Triptolemus was the young son of Celeus, and Demeter taught him the arts of agriculture, and he then traveled all over the lands of Greece, teaching the people how to farm.
You can also find more myths and legends for the week of July 22-28 here. For more information and links to the actual javascript code, see the Myths and Legends Widget Reference Page.