Silianus
Could not find Silianis in Logeion dictionaries.
Silianis Proper-name adjective: masculine ablative plural, Proper-name adjective: feminine dative plural, Proper-name adjective: neuter ablative plural, Proper-name adjective: neuter dative plural, Proper-name adjective: masculine dative plural, Proper-name adjective: feminine ablative plural of Silianus
Sīlĭānus, a, um, v. Silius.
Sīliānus, a, um, s. Sīlius.
Sīlĭānus, (14) a, um, de Silius : Cic. Att. 12, 31.