Possible Clues:

• French city with famous 12th-century bridge which is now partly destroyed
• Indefinite number populating a northern Spanish city and northern French city
• Six 14th-century conclaves took place at the Palace of the Popes, in this city in a former papal enclave
• French city, 14th-century seat of the papacy
• Somewhere on the Rhône, American wanting six starters of grits and nachos receiving disagreeable response
• The French city which has a Palace of the Popes
• Dissolute characters from Govan in French city
• Six grand to put in soon in French city
• French city where seven popes lived
• Location of Papal palace in France