Marion Co TOC

I need help with this photo, it is really choice! It came from the estate of Ernest Layton and his wife Helen. I believe these to be possibly Ernests father, George W. Layton and or Georges brothers, maybe one is Mr. A. S. Layton.
My Great Great Grandfather was Austin "Ossie" Layton, the son of Dr. A. S. Layton and younger brother to the men I just mentioned. These men look like my Great Great grandfather but I think they are his brothers. They were in the banking business, owned lots of properties in the area and owned a mercantile. Any help identifying these folks would be wonderful.

If anyone knows who these people are please let me know. Be sure to include the photo number in your email so I can locate the correct photo. Thanks Linda (email address below).