Cronus, called Saturn by the Romans, was a Titan. He was lord of the universe after wounding his father Heaven, and he ruled with his sister Rhea. The Golden Age prospered during his reign. Cronus learned that one of his sons will overthrow him, so Cronus took preventive measures by swallowing every son he bore. However, when Zeus was born Rhea hid him at Crete where he grew up. Zeus and Cronus fought in a devastating war that was pitting the Titans against Zeus and his siblings. Eventually the gods won, and Zeus overthrew his father as ruler of the universe.