Opimia gens
The gens Opimia, also written Opeimia on coins, was a plebeian family at ancient Rome. Members of this gens are first mentioned during the time of the Samnite Wars, and they are mentioned in Roman historians from then down to the end of the Republic. The first of the Opimii to obtain the consulship was Quintus Opimius in 154 BC. Origin. The nomen "Opimius" is derived from the versatile Latin adjective "opimus", which may be translated as "best, highest" or "fat, abundant, fruitful". The name belongs to a large class of gentilicia which were either Roman or which  cannot be shown to have originated elsewhere. Praenomina. The chief praenomina of the Opimii seem to have been "Quintus" and "Lucius", but the family also used "Gaius" and "Marcus". All of these were very common names throughout Roman history. Branches and cognomina. The only surname used by the Opimii of the Republic is "Pansa", meaning "broad-footed". However, most of the Opimii mentioned in ancient writers bore no cognomina.