It would be amazing to live in a house that had been in the family that long. I once felt the presence, as best as I can describe it, of a recently deceased loved one and the feeling got stronger by the second, like a rush, and I had to tell myself to get a grip. If I hadn't done that I don't doubt that I might have seen the person. I see no reason not to think that they were letting their continued existence be known to me.