Tertius

Tertius is a name of ancient Roman origin, derived directly from the Latin word 'tertius', meaning 'third'. It was commonly used in Roman society as a praenomen (given name) for the third-born son in a family, or sometimes as a cognomen (surname). Its use reflected a straightforward numerical system for distinguishing children within a family, particularly before more elaborate naming conventions became widespread.

The name gained religious significance through its appearance in the New Testament. A man named Tertius is mentioned in the Epistle to the Romans as the scribe who wrote down Paul's letter. This biblical association helped to preserve the name's usage, especially in Christian communities, though it never achieved the widespread popularity of some other biblical names. Over time, its direct numerical meaning made it less common as a standalone given name, evolving more into a historical or literary reference.