Rockdoc-
No, but good guess. I'm not that creative. I picked that name because I hunt with Weimaraners, which are sometimes called "gray ghosts" or "ghost dogs". There was also an excellent movie several years back called "ghostdog: way of the samurai".
Roy and dollysods-thanks!
My Uncle and I used to hunt with a Weimaraner named King. One day my Uncle shot the last bird of the day for our limit. King dropped it at my Uncle's feet, then trotted back into a buck brush patch and brought out another bird that a previous hunter had wounded. That crazy dog put us one bird over the limit. We were glad there was no warden around. I can't imagine any warden would believe that story.