I.the name of a Roman gens, e. g. C. Herennius, to whom the Rhetorica of Cornificius is dedicated: “M. Herennius,” an orator, Cic. Brut. 45, 166; id. Mur. 17, 36: “Herennius Gallus,” Tac. H. 4, 13; 19; 26 sq.: “Herennius Senecio,” a historian under Domitian, id. Agr. 2; 45; a Samnite Herennius, Liv. 9, 1; Flor. 1, 16, 10.—
II. Deriv.: Hērennĭānus , a, um, adj., of or belonging to a Herennius, Herennian: “coheredes,” Cic. Att. 13, 6, 2.