Did you find out about your C. Atherton???? I have found lots of information about the Athertons. Couple of days ago I stumble on to something that may help you with your C Atherton. On the 1870 census listed just below our Charles & Nancy Atherton ( Parents of Calvin & Richard Atherton of Hunt County Texas) is a Christoper Atherton. I believe this is your C. Atherton and the brother of our Charles (1824) Atherton. I have know proof just a good quess!!!! We still don't who Charles (1824) parents are that is because he is the only Atherton born in Ill that lived in the Ballard area.Several of the orginal Atherton moved to Ill. I haven't found the connection yet. Let me know if this helps or if you knew of this Christopher.