Thespiacus
Could not find Thespiacis in Logeion dictionaries.
Thespiacis 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 Thespiacus
Thespĭăcus, a, um, de Thespies : Val. Flacc. 1, 93 || de lʼHélicon : Stat. S. 2, 7, 16.