I had Bernard, but I think it basicly is the same fight. You can stack the werewolf lures on him. I think, if you put 5 on him, you should have a 100% chance of taming him (but not sure about the numbers). You also need to have the improved prison cells to keep him there
have the cell with silver done lower your werwolf bf health rather low use 5 lures as each lure use is 25% added to capture chance so 5 gives you 100% since if you were to use 2 it would be 49% as loses a single % cause a turn passed.