I found it, it is listed as Loudoun Benefit Horse Show. Not much info about the June show, at least not the info I was looking for. Thanks again for your reply. I guess I will just take a chance and show up and see for my self.
Dan here is a link to the the Ryegate website with the prize list for the Loudoun Benefit Horse Show June 13th to 17th. http://ryegate.com/SHOWS/Loudoun/Prizelist.pdf. The tentative time schedule is on page 20 & 21 of the the prize list. Hope this helps.