nomina

noun, plural nom·i·na [nom–uh-nuh, noh-muh-] /ˈnɒm ə nə, ˈnoʊ mə-/.

1. (in ancient Rome) the second name of a citizen, indicating his gens, as “Gaius Julius Caesar.”

noun plural nomina (ˈnɒmɪnə)

1. an ancient Roman’s second name, designating his gens or clanSee also agnomen, cognomen, praenomen