Vestalia
Could not find Vestalium in Logeion dictionaries.
Vestalium Proper-name noun: neuter genitive plural of Vestalia
Vestalium Proper-name adjective: masculine genitive plural, Proper-name adjective: feminine genitive plural, Proper-name noun: feminine genitive plural, Proper-name adjective: neuter genitive plural of Vestalis
Vestālĭa, ĭum, n. , les Vestalies, fête en lʼhonneur de Vesta : Varro L. 6, 17.