When visiting a cemetery, always compare the "stone of interest" to other nearby stones? If the dates are within the same era, does the stone appear to be the same age as the other stones? Or does it appear to be quite a bit newer and made from a different type of stone?
That may be a clue it was either not the original stone or that the stone was put in years or decades after the death.
And that's something you need to know when the transcription does not agree with contemporary records.