I may have found the answer to the 7 Lane grave mystery.
While researching my Great Grand Uncle George D. Lane, I found him living very near the Cemetery area in the 1880 census. He had a wife and 7 children. His life seems to change dramatically over the next 10 years. I find him remarried in 1888 and living in New Mexico. He has one child ,presumably of his previous marriage, born 1883. The only other child that I can find any history on was his oldest child Alonzo Lane. His first wife and six of the kids seem to have vanished into oblivion. This is not proof, of course, but a step in the right direction. I guess my next challenge is to find info on the first wife and six kids. So far, not a thing.