It seems to be called Fort St James Anglican Cemetery aka Hudson's Bay Cemetery. It is the oldest remnant of the early fur trading and existed long before the Anglican Church was built. There is another name as well, The Fur Trader Burial Ground. Go look at A Walk Through Time produced by The Friends of The Fort St James National Historical Site Society. Please also note that they talk about Peter Ogden as being the superintendent from 1869-1870.
I would say that Find A Grave has this wrong. So in my opinion, the category has been set up correctly. I did add the Find A Grave number to the category.