IF you're still looking for this infok, there is a volunteer in Edgar County who has estate & wills 1823-1963, miscellaneous probate 1823-1963, etc. You'll find his/her contact info at www.gengathering.com
, Illinois, Edgar County. You must sign in to find contact info.
If that doesn't work out, the Edgar County Genealogy Library & Society, http://edgarcountygenealogy.org/publications/
has a book Edgar Co. Estates & Wills 1823-1963 Index. You can contact them and ask if they'll do a look up for a donation to their society. Successful Searching!