Bishops ring with intriguing mystery!

A bishop's ring is not an everyday object in our inventory. In our nearly 30 years of experience in the antique jewellery trade, we can recall purchasing only two before. (One of them was used in the movie "The Da Vinci Code," based on the bestseller by Dan Brown. It was worn by Alfred Molina, playing the role of Bishop Aringarosa.)
There is something odd about this ring. Not the bishop's ring itself, but the ring that comes with it. Inside the bishop's ring, we found a hidden silver ring with a gold wolf in relief. Bishop's rings are normally worn on gloves, so their size is "a bit larger than normal". But finding another ring hidden inside such a ring puzzles us. A hidden ring with a non-Christian motif. What could be the story behind this? Why would a person wearing such a ring find it important to hide an extra symbol within this high-profile ring?
Click here for more information on this intriguing piece.