I'm reading Brent Winters' The Excellence of the Common Law right now, which relies heavily on the idea that the priesthood of Babylon fled to Pergamum when Babylon was conquered in 539 BC. The authority of this priesthood was then inherited by Rome when Attalus III willed the kingdom to Rome in the second century BC. I'm trying to fact check this idea, and find some ancient source or other that backs it up, but I'm only able to find this idea repeated on conspiracy-theory type websites. Can ...