The gens Saturninia was an obscure plebeian family of ancient Rome. Few members of this gens are mentioned by Roman writers, but several are known from inscriptions. The most illustrious of the Saturninii was Saturninius Secundinus, governor of various provinces and praetorian prefect under the emperors of the mid-fourth century.
The nomen Saturninius belongs to a large class of gentilicia formed from existing names ending in -inus using the suffix -inius. [1] It is formed from the surname Saturninus, a cognomen of very frequent occurrence, from which it must be carefully distinguished; the genitive of each may be written Saturnini. Saturninus is derived from Saturnus, the name of the god. [2]