You have so much history there! Around here, 1604 is as early as there is recorded history. (Of course, there were people here long before then, and stuff happened, but that's when the first Europeans arrived and started recording history.)
I used Google Maps to see where Bothal Castle was, and as I zoomed out to get my bearings, saw that there is another castle just down the road (Morpeth). And didn't you show us yet another just a few days ago? And weird to think that any of them are still private homes. I imagine introducing myself to a neighbour and saying, "Hi, I'm Kathy. My wife and I just bought the castle across the street."