Looking for a past owner of Dee's Super Scout

A year and a half ago my family rescued a beautiful quarter horse gelding named Scout. Since we have had him I've been trying my hardest to dig up history on him. I found one old owner and also the breeder. I have yet to find the person who had him through early 2012. She had given him to a friend who sent him to my old riding barn to be sold because he was unwanted. I would like to find the lady who gave him away because a I understand he was quite dear to her but she had to let him go. I would love to let her know how well he's doing and get some history on him!

If anyone knows anything I'd love to hear it! His AQHA certificate is in google image search under 'Dee's Super Scout' it has the 1st owners name listed.

Thanks!

-Amy