Some theories suggest that the temple was a Greek Temple dedicated to Persephone, the Greek equivalent to the Roman Goddess Proserpina. Two theories are that: the temple was located outside Melite (a Roman city) as it was Greek not Roman; and that close by in Mtarfa there was the Temple of Zeus. Persephone was the daughter of Zeus. However the restoration marble refers to the temple as of Proserpina not Persephone. in Cult and continuity.
Bonanno, Anthony (2016). "The Cult of Hercules in Roman Malta: a discussion of the evidence". In Victor Bonnici (ed.). Melita Classica(PDF). Vol. 3. Journal of the Malta Classics Association. pp. 243–264. ISBN978-99957-847-4-4. Archived from the original(PDF) on 5 April 2019.
Bonanno, Anthony (2016). "The Cult of Hercules in Roman Malta: a discussion of the evidence". In Victor Bonnici (ed.). Melita Classica(PDF). Vol. 3. Journal of the Malta Classics Association. pp. 243–264. ISBN978-99957-847-4-4. Archived from the original(PDF) on 5 April 2019.