Sithonius
Could not find Sithonio in Logeion dictionaries.
Sithonio proper-name adjective neuter dative singular, proper-name adjective masculine ablative singular, proper-name adjective masculine dative singular, proper-name adjective neuter ablative singular of Sithonius
Sīthŏnĭus, (14) a, um, de Thrace : Virg. B. 10, 66 ; Hor. O. 3, 26, 10.