Most religions are self referring, which is natural considering the system building effort of theology. But as they also insist to know everything about the real world some connections to history is necessary. The four testaments are after all bearing witness about Christ. But it is true that not only the revelation of John, but all of the new testament is referring backwards to the old prophets.
One thing in your analysis I do not agree with. The Brits were never Romans, neither politically nor culturally. The German-Austrian realms are the the heritage of Rome and their Emperors fell in 1918.