Flavius, derived from the Latin 'flavus', meaning 'golden' or 'yellow', was a common Roman family name during the early centuries of the Roman Empire. It is believed to have originated as a descriptive nickname for someone with light-colored hair or fair complexion. The name gained prominence through several prominent figures in history, most notably Flavius Josephus, a first-century Jewish historian and romanized version of Flavius, was used by some emperors of the Flavian dynasty, including Vespasian, Titus, and Domitian. Throughout centuries, variations of this name have been adopted across different cultures, appearing as Flavien in French, Flavio in Italian, and Flavio in Portuguese.
"Flavius was quite popular in 1921 with six births that year, but saw a dip to five births in 1926. Altogether, there were eleven babies named Flavius over those two years."