My guess is that it's Mount Olivet Cemetery. I also think that the 2nd Plank Road is really named Blake Road (at least it is on the 1889 Plat map that I accessed) and just a little east of the cemetery is Jordan Road. John Cameron's land is just south of the cemetery. It can be mapped on google maps. Just put in Mount Olivet Cemetery, De Pere, WI
The cemetery is still there.