In Roman mythology, Favonius ("favorable") held dominion over plants and flowers. He was generally equated with the Greek Zephyrus.

Favonius was also a Roman nomen.

• Marcus Favonius, praetor 49 BC
• Favonius Eulogius, rhetor of Carthage contemporary with Saint Augustine, wrote a Disputatio de somnio Scipionis
• Marcus Favonius Facilis, a centurion of Legion XX who died in Britain and whose tombstone is displayed in Colchester museum Photo of tombstone (http://www.resource.gov.uk/action/designation/40_01_colc.asp)

No doubt inspired by the tombstone, the computer game Dark Ages of Camelot features a powerful undead monster named Favonius Facilis.