Elaine, on picture Sheffield there are views of Loxley chapel. There are also 2 picture which show the landscape and identify Loxley chapel and Clifton House as separate buildings close to each other. There does not seem to be a Clifton Chapel.
The map on site is incomplete. it is cut off on the left side. Do you have the original please? That may help with the grave refs.
I can see a pattern emerging for the grave references. That will be clearer when I have finished collating the data in the Excel file. Give me a couple of days on that.