Lewis & Short

2. Lĕpĭdus, i, m., a surname in the gens Aemilia; e. g. M. Aemilius Lepidus, consul 675 A. U. C., an enemy of Sylla, Cic. Cat. 3, 10, 24; id. Verr. 2, 3, 91, § 212.
Another M. Aemilius Lepidus, triumvir with Antony and Octavius, Cic. Mil. 5, 13; id. Phil. 5, 14, 39; v. his letters to Cicero ap. Cic. Fam. 10, 34 sq.
Hence,

  1. A. Lĕpĭdā-nus, a, um, adj., of or belonging to Lepidus, Lepidan: bellum, Sall. H. Fragm. 3, 63 Dietsch.
  2. B. Lĕpĭdĭānus, a, um, adj., of or belonging to Lepidus, Lepidian: tumultus, which broke out a year after Sylla’s death, in the consulate of M. Æmilius Lepidus, Macr. S. 1, 32.