2020-4-11 · Appendix:Latin praenomina. This is a list of Roman praenomina. See Roman naming conventions . Appius (Ap.) — only used by gens Claudia. Aulus (A.) or Olus. Caelus — from Etruscan Caele. Decius — associated with the gens Minatia. Decimus (D.) — "tenth". Faustus — "lucky" an archaic praenomen revived by the dictator Sulla for his twin ...