The story is reprinted in several Masonic publications as well as the regimental history (part of a chapter dealing with Masons in the regiment [XXVII]), with slight variation. Lt. Edom is also given as Edon, but in both respects I cannot find out who he was. There was a Pvt. Edom with an Alabama regiment, though.
The regimental history adds the following to the story:
These Confederate Masons, with some ten Union Masons wounded in the battle, were placed in a barn and for several days were cared for by Assistant-Surgeon William Child and Chaplain Ransom, both Masons.