I know this is a shot in the dark, your message is probably a cold trail now but...
I'm in Palo Pinto County Texas and I'm also trying to find my Gonce relatives...I read your message yesterday and today I went to the courthouse to search for our Gonces. I could not find anyone by the name of Louis Cleveland Gonce. Are you sure that is correct? (I'm not sure how one could mess that up!) There were very few Gonces in and around Palo Pinto Co.
I tried death records and deeds too...nothing.
The Gonces I'm looking for came from Missouri, but I know not where.... John A (anderson??) Gonce who married Nancy Snyder. I have no other information on them at this time. I think next I'll try getting some census records and back-track from there.