They are still the in the home they have lived in for about 40 years. They had a vacation home down south we had to sell last year. He believes, for some reason, that the home he is in now was moved from one town to another. And that we moved the house without his permission. He thinks we are all lying (4 children and his wife) when we insist that it is the house he built 40 years ago and it’s exactly where he chose to build it way back then. We have tried distraction, having him explain where he thinks it used to be... it is driving both him AND us crazy! We have always been and continue to be a loving family who will do anything for each other. In other words, he would have no reason to think that we are trying to swindle or fool him. Any advice?