In Roman mythology, Saturn was the father of Jupiter.
Saturn was an ancient Roman deity associated with agriculture, wealth and time. Mythological traditions describe him as the father of Jupiter, Neptune, Pluto, Juno, Ceres and Vesta, generally through his union with Ops. Jupiter later became the chief god of the Roman pantheon.
The story is closely related to Greek mythology, where Saturn corresponds broadly to Cronus and Jupiter to Zeus. Roman writers adapted and reshaped Greek divine genealogies, so names and cultural associations can differ between the two traditions.
Saturn’s most famous Roman festival was the Saturnalia, a December celebration known for feasting and temporary reversals of social conventions. That festival is separate from modern Father’s Day, but Saturn’s role as a mythological patriarch makes him a useful example of fatherhood in classical storytelling.