The gens Calidia or Callidia was a Roman family during the final century of the Republic. The first of the gens to achieve prominence was Quintus Calidius...

The gens Cosconia was a plebeian family at Rome. Members of this gens are first mentioned in the Second Punic War, but none ever obtained the honours...

Look up gens in Wiktionary, the free dictionary. The gens (plural gentes) was a Roman family, of Italic or Etruscan origins, consisting of all those individuals...