EDIT: solved my problem, which oddly turned into a solution that is far better than my original setting. nice. I would still be interested in any replies though, for general knowledge in writing fiction. ----- I have a story based on a real life character and place/building and what he did (ca. 1800), but that I add a supernatural element to to make it a supernatural mystery. Should I base the fictional story on the same period of time of the real life story (without the supernatural, without the specific mystery), or is it okay to skew the time period even a couple of decades? My problem is that I want to skew the time period two decades beyond the real life character for a variety of reasons, but doing so means that the real life building was destroyed two decades after the real life situation. Perhaps as this is fiction, I could change the name of the building to a fictional building (that exists at the time I choose for my story)?