Many family trees give him the middle name "Jackson," but not a single primary source lists a middle name for him, to include the will of his father, Aquilla Lane, and the widow's pension application of his mother, Agnes Lane. See the references I added to his bio. Both of these sources list the middle names for children who had them (John King Lane and Thomas Jefferson Lane), so if Garrett had a middle name, surely it would have been listed, too.
Would a curator please remove the middle name?