Cecropius
Could not find Cecropium in Logeion dictionaries.
Cecropium Proper-name adjective: neuter vocative singular, Proper-name adjective: masculine genitive plural, Proper-name adjective: masculine accusative singular, Proper-name adjective: neuter genitive plural, Proper-name adjective: neuter nominative singular, Proper-name adjective: neuter accusative singular of Cecropius
Cecropium Proper-name noun: masculine genitive plural of Cecrops
Cecrŏpĭus, (12) a, um, dʼAthènes ou de lʼAttique : apes Cecropiæ Virg. G. 4, 177, les abeilles de lʼHymette.