The Romans had many, many gods and assimilated local gods wherever they conquered.
Their original pantheon of 12 gods which included Jupiter, Mercury, Mars and others were copies of Greek gods – Zeus, Hermes and Ares in these 3 cases.
Many other religions and figures were introduced according to local tradition. The Cult of Mithras gained importance as a semi-secret religion practised by the army elite and notable citizens. It was an Eastern religion from what is now Iran.
In Scotland we have alters dedicated to
- Jupiter, father of the gods
- Venus and Cupid
- Ceres, sister of Neptune
- Diana, the goddess of hunting
- Jupiter Dolichenus, a mix of Roman and Syrian gods
- Hercules Magusanus
- Sol, the sun god
- Silvanus, a spirit of the woods
- Parade Ground goddess
- Priapus, a fertility god from Turkey
- Ricagambeda, a Rhineland god
- Mother goddess
- Brigantia, a local god
- Camelon, the local belly god