Your search R.F.C. Hull gave 3 results.
Many of the inscriptions and sculptures of the site were kept in a museum which has been destroyed.
One of the rooms in a sustantive masonry building in Hollytrees Meadow was considered to be a Mithreum, a theory that has now been discarded.
The concluding book of Apuleius’ Golden Ass (or Metamorphoses), where Lucius, the story’s protagonist, undergoes initiation into the mysteries of Isis and Osiris.