The gens Quirinia was an obscure plebeian family at ancient Rome. No members of this gens appear in history, but several are known from inscriptions.
The nomen Quirinius belongs to a class of gentilicia derived from other names ending in -inus.[1] Its root, the surname Quirinus, was an old Sabine word, apparently derived from quiris, a spear or javelin. As a cognomen, it was applied to Romulus, the legendary founder and first King of Rome, and it was later applied to other persons, including a family of the Sulpicia gens, and deities, including Mars, Janus, and the deified Augustus.[2][3]