Romulius
Could not find Romilium in Logeion dictionaries.
Romilium 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 Romulius
Rōmŭlĭus, (16) v. Romilius.
Romu'lius Denter
is said to have been appointed praefectus urbi by Romulus. (Tac. Ann. 6.11.)