Cynthius
Could not find Cynthi in Logeion dictionaries.
Cynthi Proper-name noun masculine vocative singular, proper-name adjective neuter genitive singular, proper-name adjective masculine genitive singular of Cynthius
Cynthi Proper-name noun masculine nominative plural, Proper-name noun masculine genitive singular, Proper-name noun masculine vocative plural of Cynthus
Cynthĭus, (13) ĭī, m. , Apollon [honoré sur le mont Cynthus] : Virg. B. 6, 3.