The gens Arpineia or Arpinia was an obscure plebeian family at ancient Rome. It is known chiefly from a single individual, Gaius Arpineius, an eques in Caesar's army during the Gallic Wars. [1]
The nomen Arpineius belongs to a class of gentilicia formed using the suffix -eius, typically formed from words or names ending in -as. The root of the nomen is the cognomen Arpinas, a surname indicating a relationship to the city of Arpinum in southern Latium, whence the ancestor of this family probably came. [2]