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