Hi,
If you google Cemetery Road, Stamford there is a result saying that Cemetery Road became Radcliffe Road and there appears to be a Cemetery at the junction of Radcliffe Road and Little Casterton road which might fit the bill.
Not sure but it appears to be Stamford Cemetery, I m sure if you rang the appropriate number for Cemeteries someone would be able to help pinpoint George's grave and probably give you a plot number etc which would be easier to search for, especially if its a large cemetery. They are usually very helpful.
Best wishes,
Cathy