In researching my 3x ggrandparents, I found their gravesite on Find a grave, and a volunteer took a picture for me. The headstones are completely destroyed. If I can find if he was military, the VA may replace the headstones. His name is James G Oliver and she is Sarah Oliver. He was born in Ohio-1816 and died in Fort Collins, CO in 1885. They also lived in Illinois and Missouri.
Any help would be much appreciated