Spurius (Latin pronunciation: [ˈspʊriʊs]), feminine Spuria, is a Latin praenomen, or personal name, which was used primarily during the period of the Roman Republic, and which fell into disuse in imperial times. It was used by both patrician and plebeian families, and gave rise to the patronymic gens Spurilia. The name was originally abbreviated S., as it was the most common praenomen beginning with that letter; but, as it grew less common, it was sometimes abbreviated Sp.[1][2]
For most of the Roman Republic, Spurius was about the ninth most-common praenomen. Although used by a minority of families, it was favored by many, including the gentes Carvilia, Cassia, Furia, Nautia, Papiria, Postumia, Servilia, and Veturia. It was most common during the early centuries of the Republic, and gradually declined in popularity until it all but disappeared during the 1st century AD.[3]