I'm thinking CR1 was one of those "jack of all trades". He didn't have a lot of education, but was good with his hands, good at putting together properties (land w/a home on it can increase in value), seemed adept with vehicles, etc... That LF parcel is a nice parcel, as is DR's. Most of it was et al. The piece he acquired from TR's mil was a nice add on to the UHR. I have a theory that he was doing what he could to build up his financial holdings. He may have wanted to get out of the grow business. I've got family who don't have formal educations, but have carved out a very nice living by being savvy on buying, and trading, building their own businesses, (the right ones at the right times) over the years, purchasing land, improving it, renting or selling it, etc... That land may have been something CR was holding onto for his kids, down the line, or to improve and sell in a few years. He had at least one trailer on each of the pieces of land. Not on every parcel, but all of the parcels were connected, and made up fairly large plots, with trailers, and some with barns on them too.
About the female siblings turning over their part in the inherited land, it's still kind of a thing, that the men in the family get the land/home place, in some areas. It doesn't mean that there wouldn't be ill feelings though unless they just signed it all over out of the desire for the male siblings to have the land. It seems that one of the female siblings wanted something for their part though.
Edit: Another thing, I just thought of, there's folks who will lease land like that for hunting seasons. That's the only time that they use the land, just to hunt deer, turkey, etc... They want to do nothing else but hang out on your land for a few weeks each year. I don't know a lot about it how it works, but some folks around us have done it and made decent money for letting folks sit in a tree stand all day.