Apparently it is a 19th Century building that the couple bought as a shell in the 1980s. They then spent the next 30 years doing it up, so you can understand their reluctance to allow a bunch of self entitled lefty soap dodgers to burn it down.Looks like a McMansion to me. Small gust of wind would blow it over.
Of course in Texas the couple would have been arrested for NOT shooting the intruders. In fact I think that Texas pays a $5,000 bounty for every intruder killed, so if they had played their cards right they could have got a new extension built out of the incident.