Specters, presences, emanations or just plain ghosts – whatever you call them, Ashburn doesn't appear on the surface to be a likely place to find them. According to the conventional lore, ghosts need creaky old houses, churchyards or battlefields to establish a residence, and Ashburn is short in all these locations. There is the cemetery at Ashburn Presbyterian Church, in the oldest part of Ashburn, and for some reason Google lists Ray Muth Sr. Park, across the street from my home off Gloucester Boulevard, as a cemetery (can anyone tell me why?); but for the most part ghouls are not likely to…