An important and popular figure in mythology, Dionysus was the son of Zeus and Semele, the mortal daughter of the king of Thebes. He was known as the god of wine, winemaking and grape cultivation. He was worshiped by the ancient Greeks as one of the 12 Olympians before being incorporated into the Roman pantheon of gods as Bacchus.
Source: 2,000-Year-Old Marble Head of God Dionysus Unearthed in Rome – Geek.com