Demeter was the Greek goddess of agriculture and protected the trees, plants and grains. She was the first to make the earth fruitful and taught people how to grow wheat, barley and other plants. Demeter is somewhat isolated from the twelve gods in ancient myths and this is because she is an even more ancient goddess herself. The Greeks received her cult from the Pelasgians, who originally lived in Greece. According to Greek mythology, Demeter's daughter is mentioned as Persephone, who was once abducted by God Hades and became his wife. The most sacred and secret religious rites of ancient Greece, the Eleusinian Mysteries, were held in honor of Demeter.