Re: Raised floors in historic house
Old houses sometimes had massive stone foundations that were infilled between the floor joists. If the floor joists decay or shrink, the flooring itself rides high on the masonry. The solution would be to investigate the condition of the joists. Another characteristic of structure the age of yours is that there isn't even a crawl space beneath; the framing was basically laid at ground level, making work below impossible without hand-digging, or pulling the floors. Assuming you don't want to destroy the floors (once original flooring comes up, it never goes back down the same) you would have to excavate. If the flooring runs beneath the baseboard, that has to come out first. If you are lucky enough to have a cellar in the affected area, it will be relatively painless to shim or repair the framing in a straightforward manner.
Remove not the ancient landmark, which your fathers have set.