Who was Orcus?

Orcus was a dreaded spirit: people didn’t like to talk about him much, hence little information survives. Oaths were traditionally sworn on his name.

Is Orcus of Celtic or Roman origin?

He may be of Celtic origin, although others argue that he was originally Etruscan. In other words, did the Romans bring him to Gaul or learn of him in Gaul? It is possible that Orcus may be but another name for other death lords like Hades, Pluto, or Dis Pater.

Did the Romans bring Orcus to Gaul?

Orcus, Lord of Death, was venerated in Gaul and Rome. He may be of Celtic origin, although others argue that he was originally Etruscan. In other words, did the Romans bring him to Gaul or learn of him in Gaul? It is possible that Orcus may be but another name for other death lords like Hades, Pluto, or Dis Pater.

How did Orcus evolve into an ogre?

If broken or if perjury occurred, Orcus would punish the wrongdoer. Post-Christianity, Orcus evolved into the Italian orco, an Italian tusked monster. The roots of the word ogre may also derive from his name. J. R. R. Tolkien’s Orcs derive their name, if not their nature or appearance, from Orcus.