Richard Carrier has written a book on the historical method where he argue all valid historical methods can be described by, and reduced to, the logic of Bayes Theorem. Conversely, he argues that any method that cannot be reduced to this theorem is invalid and should be abandoned.
He argue this is particular important when investigating christianic origins and he identify the lack of bayesian methods as a key problem. He is currently preparing a second book that will apply the tools in "proving history" to this question.
I could only find two reviews (on blogs) of Carriers book, and i didnt think either was very informative. Since bayesian methods is my area of research, i think i could actually write an informed review. But it would be some work and I only think i would do it if someone had an interest in it, or was generally interested in Carriers ideas.