Threicius
Could not find Threiciis in Logeion dictionaries.
Threiciis 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 Threicius
Thrēĭcĭus, a, um, v. Thracia, D.
Thrēicius, -issa, s. Thrāces.
Thrēĭcĭus, (11) a, um (Θρηΐκιος), de Thrace : Virg. En. 6, 645 ; Hor. O. 1, 24, 13 ; Ov. M. 11, 2.