score:18
As @Semaphore has observed in the comments, this is something that happens very frequently. The reason comes down to how historians use sources.
When I studied the subject, many years ago*, my tutor suggested seven guidelines:
(Ironically, she never quoted her source for these guidelines).
Clearly, several of these guidelines are subjective - particularly the last one! It is not surprising then that interpretations of events often vary according to the personal views or prejudices of particular historians (leaving aside the minor detail that "new evidence" (which is often just new interpretations of existing evidence) is always good for creating controversy and stimulating book sales!).
A couple of fairly well-known examples from British history would be:
*Almost so long ago that Pontius was still a Pilate, and Centurion was a rank and not a tank!