Quintavius, a masculine appellation of Latin provenance, derives from the classical Roman praenomen Quintus, signifying “fifth,” to which the morphological suffix –avius—connoting lineage or kinship in ancient onomastic practice—is appended. Its English pronunciation—kwin-TAY-vee-uhs (/kwɪnˈteɪviəs/)—adheres to Anglo-American phonological norms, producing a measured, evenly stressed cadence. U.S. Social Security data trace its usage back to the late 1980s, with annual registrations seldom exceeding thirty newborns and national rankings fluctuating between roughly 700 and 920, a pattern that attests to its sustained yet selective adoption. In modern cultural contexts, Quintavius functions as a conscious evocation of classical heritage, appealing to parents who prioritize historical resonance and individual distinctiveness over mainstream popularity. As an object of onomastic analysis, the name exemplifies the contemporary adaptation of ancient Roman naming conventions to the dynamics of Anglo-American identity formation.