Possible Clues:

• ___ Circus (ancient Roman arena)
• Peter and a Wolfe
• Peter and the Wolfe?
• Pianist and fiddler
• Pianist Peter and a Roman emperor
• __ Circus: ancient Roman arena
• ___ Circus (old Vatican area)
• Claudius Drusus and Wolfe
• Sleuth Wolfe et al.
• ___ Circus (where St. Peter was crucified)