I.an Oscan prænomen: Mamercus praenomen Oscum est, ab eo, quod hi Martem Mamertem appellant, Paul. ex Fest. p. 130 Müll.—
II. A Roman surname in the Æmilian gens, who claimed Numa as their ancestor: “ridere Mamercorum alapas,” Juv. 8, 192.—Esp.: “M. Aemilius Mamercus,” Cic. Brut. 47, 175.