Frequently asked questions (FAQ)
Why do the dates on the GPR index not match the dates I already know about?
The dates on the index are obtained from the monuments themselves. Often the age given on a monument is an estimate made by the surviving relatives.
Another reason why the dates may be inaccurate is that the monument may be worn or damaged and the age or date of death is what the person indexing it believes it to be.
Finally the reason the dates are incorrect could be because the stonemason made a mistake. This happens even today - a recent grave monument list the deceased as dying ten years in the future!