Thebaeus
Could not find Thebaeis in Logeion dictionaries.
Thebaeis proper-name adjective neuter ablative plural, proper-name adjective feminine ablative plural, proper-name adjective masculine ablative plural, proper-name adjective neuter dative plural, proper-name adjective feminine dative plural, proper-name adjective masculine dative plural of Thebaeus
Thēbaeus, a, um, s. Thēbae.
Thēbæus, a, um, de Thèbes [en Égypte] : Claud. Idyll. 1, 91.