Lewis & Short

2. Sĭlus, i, or Sīlo, ōnis, m. [1. silus], a Roman surname, esp. of the gens Sergia.

    1. 1. M. Sergius Orata Silus, Cic. de Or. 2, 70, 285.
    2. 2. M. Sergius Silus, Liv. 32, 27, 7; Eckhel. D. N. 5, p. 306.
    3. 3. Domitius Silus, Tac. A. 15, 59 fin. al.
    4. 4. In the form Silo: Arruntius Silo, Dig. 48, 19, 27; cf. Plin. 11, 37, 59, § 158.