As I recently demonstrated, Popessa Priscilla was the real bishop of Rome. Over the centuries, millions of the faithful have damned themselves by going to the wrong address. They mistakenly thought The One True Church was situated on Vatican Hill when, all along, The One True Church was situated on Aventine Hill. They mistook to San Pietro for Mother Church when that honor properly belongs to Santa Prisca.
You can never be too particular about your geography.