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In ancient Roman religion, Dius Fidius (less often as Dius Fidus) was a god of oaths associated with Jupiter. His name was thought to be related to Fides.[1]
Fidius may be an earlier form for filius, "son",[2] with the name Dius Fidius originally referring to Hercules as a son of Jupiter.[3] According to some writers,[4][5] the phrase medius fidius was equivalent to mehercule "My Hercules!", a common interjection.
- ^ Sextus Pompeius Festus s. v. medius
- ^ William Smith, Dictionary of Greek and Roman Biography and Mythology, v. 2, page 150, under Fidius Archived May 14, 2011, at the Wayback Machine
- ^ Ovid, Fasti, 6. 213
- ^ Cicero, Letters to friends, 5. 21.
- ^ Pliny, Letters, 4. 3.