Dionysus was the god of the grape harvest, winemaking and wine, of ritual madness and ecstasy in Greek mythology. He is a major, popular figure of Greek mythology and religion, and is included in some lists of the twelve Olympians. Dionysus was the last god to be accepted into Mt. Olympus. He was the youngest and the only one to have a mortal mother. He was also known as Bacchus, the name adopted by the Romans and the frenzy he induces, bakkheia. He is also called Eleutherios (the liberator), whose wine, music and ecstatic dance frees his followers from self-conscious fear and care, and subverts the oppressive restraints of the powerful. Those who partake of his mysteries are possessed and empowered by the god himself. Engraving by Hendrick Goltzius, 16th century.