Naming Conventions for Males “THREE NAME CONVENTION (TRIA NOMINA).” Anyone who’s watched a “sand and sandal” flic, like Gladiator, is familiar with this concept; most Romans had three names, such as “Gaius Iulius Caesar.”  The components of the TRIA NOMINA were PRENOMEN, “Gaius”; NOMEN, “Iulius”; and COGNOMEN, “Caesar.” Think of the three names as “First…