Tertius is a Latin name meaning 'third' (likely indicating birth order in the family). He appears once in Romans 16:22, inserting his own greeting as the one who wrote down Paul's letter. This rare personal interjection by the scribe gives a human glimpse into the letter's production. Cross-linguistic evidence shows consistent transliteration (Tertius, Tértios, Tertullus—though the French appears confused with another person). The name preserves the individual who physically penned one of Scripture's most theological masterpieces.