The posted coordinates will bring you to the most unique headstone in the cemetery. The family name is Cooper but the top is covered with orange lichen. Find the inscription for Isabelle, wife of Charles Cooper. How old was Isabelle when she died. This two digit number is A.
Next move to stage 2 and find one of two headstones for Mary Ann Wilson, wife of T.B. Willis. Once you find the one headstone turn around 180 degrees and you will find the second headstone for Mary Ann, or Minnie Wilson. Not sure why she has two headstones but it is unlikely there are two women who died the same day, at the same age, while married to the same man.
What are the last 2 digits in the year of Mary Ann's death. This two digit number is B.
Add A to N43 56.826 and subtract B from W 79 09.183
You should now have the coordinates for the final cache location.
Enjoy your walk around this small cemetery. Please be respectful during your visit and avoid visiting after dark.