I do not know if they are on "Find a grave" or not. Believe it is spelled Hanning. I have been to the one off of 681 and the one near Pleasanton. I live in that area. I found out about the third on the message board under the heading "First settlement", I think. The third is just over the line in Athens Twp. It tells about the Hannings in this series of messages. I enjoy reading what everyone has said.