This is another simple two stage multi-cache and another in my "Church in the Wildwood Series" or "CitWW:", which may be a little challenging to figure, find or, who knows, maybe both. You might call these ones the 'abridged' versions!!! Patience, you'll see... Mwhahahaha!
Small country cemeteries are absolutely amazing to me! Visiting them, is like stepping back into another time.

Historically...
Potter's Cemetery is located at 7321 6 Line, (Concession 7, Lot 18), Mapleton Township, Wellington County. The cemetery is registered to Mapleton Township and is both closed and abandoned. The stones have been gathered into a cairn.

Adapted from http://geneofun.on.ca/cems//ONWGT14490, accessed on 10 December 2017.
Puzzl-ingly...
WARNING ... you will need a data connection or access to a computer to get the coordinates for this puzzle!!!
Assume N 43 and W 080.
In the Potter's Cemetery, you will see a headstone that is totally different than the rest. On it you will find data for a husband and a wife.
Subtract the two years of death ... this is A.
The difference in their ages is B.
Click on the certitude and enter the numbers in the form AABB. If they are correct, you will be given the final coordinates and an hint. If not, well you'll figure it out.
Parking-ly...
Parking at the cemetery and the final, will be at road side, so please do so carefully, thoughtfully, and certainly safely.
Geochecker...

You can validate your puzzle solution with certitude.