Wow, the information from Mr. Parker is quite a valuable addition to genealogical research. In looking online to learn a little more about him I came across your post on CivilWarTalk, a great forum site: http://civilwartalk.com/threads/giving-credit-to-elmer-oris-parker-for-helping-to-restore-robert-e-lees-citizenship.119485/
I also never knew that Lee applied for citizenship after the Civil War, interesting.
The southern states became quite the focus of the American Revolution later in the war, and was quite the theatre. I came across this informative link that shares details of the Daniel McClaren land. Fascinating that a battlefield would end up for a time in private hands. Though I imaging at the time it was mostly just considered land (and not a place of major historic significance). http://www.nps.gov/parkhistory/online_books/cowp/cowp.pdf
Thanks for sharing. Have you had a chance to visit any of the battlefields or historic sites?
-Dan