Congratulations on your Civil War era home find and your willingness to take on the chore of caring for such a national treasure.My stepdad's log home was bulldozed a few years ago in Laconia, Fayette Co TN and the loss of that wonderful old house was, and is even yet, a tragic event for me.
The William McKee 1822 LW&T that you mention...........if you have a transcript would you post it for us?Was it from a Wm McKee living in Orange Co NC or Maury Co TN?
For Civil War era information on Orange Co NC folks and their homes, my first bet would be the Orange County NC Historical Society.Your Orange County Court House deed and property records office and helpful court clerks would help.Old church records and school records can help.Many of these era records have been extracted and are available for purchase.The NC Archives is a great source.(You may have already done those acts.)I have not looked at the mid-1800 era census for McKee still living in Orange County NC.If you do not have access for those census records, let me know and I will look them up and see if there were still McKee living there ca 1860.There are several forums here at GenForum that might also garner better info for you.
Orange Co NC Forum and North Carolina Forum and, I think, there is a Civil War Forum that would possibly help.
I have emailed with Judy that you speak of and I know her folks are/were (Maury or) Williamson Co TN but were Orange Co NC and if she did not have relatives that remained in Orange Co NC then the Alexander McKee bunch of Maury Co TN might. (I am speaking from memory here so hope I do not place Judy's folks in the wrong county again.)There was a whole passel of Alexander McKee and Mary Bean McKee kids and some descendants may have some research into mid-1800 Orange Co NC.
Let me know if I can help further.I applaud you in your efforts here.Linda McKee