Michael:
Welcome to WikiTree and to G2G. I hope we can help you in your search.
I've tried searching FamilySearch.org - and imagine you've been there, done that to no avail. I do wonder if you've looked at the many Medlins listed here on WikiTree by birth date? And whether or not you've done that, have you tried contacting any of the other contributing Profile Managers who are working the same line?
If not, here's the place you might like to start:
http://www.wikitree.com/index.php?title=Special:Surname&s=MEDLIN&order=dobup
Good luck,
Keith