They are buried in the Selby Burying Ground in East Gwillimbury, Ontario about an hour north of Toronto. The Selby Burying Ground is on the west side of Leslie Street in East Gwillimbury, and is separate from the adjacent Weddel Family Plot.
I overlayed the text of the stones onto these images because they are quite hard to read. In addition to being old and weathered, these stones have been moved from their original location and they are now lying down in a circle alongside the other headstones in Selby. This has unfortunately resulted in more erosion on the face of all of the stones, and some are almost unreadable. I wanted to make sure to preserve as much as I could of my gggggrandparents' stones.
I don't know why this was done, as it was not done in other cemeteries in the area. The local historian was not certain either. So the remains of none of these people are necessarily under their specific tombstones. But they were all buried in that area, and their remains have likely long since returned to the earth.