Firmĭus, ii, m.,
a Roman proper name , e. g. Firmius Catus, Tac. A. 2, 27; 4, 31.— Hence, Firmĭānus , a, um, adj., of Firmius , an unknown silver-worker of that name: Firmiana vasa, Plin. 33, 11, 49, § 139 (Jan. Furniana).