I am wondering if Henry is this Henry (https://www.findagrave.com/memorial/26449305/henry-p-pawling). I'm unsure why it has P as a middle initial, likely a transcription error. Per previous documents attached (namely PA Genealogical Society Newsletter), he moved to Atrim Township (previously Lancaster), in Cumberland County (which I believe now is Franklin County as of 1784 - https://en.wikipedia.org/wiki/Franklin_County,_Pennsylvania). His son, Henry Jr. (p. 15-16 PA Newsletter) is also buried in the cemetery, next to the headstone in question.
The only thing that throws me is that per the PA newsletter (p. 15), his will was created Dec 1762, proved Apr 1763, and it really seems like the headstone says 1761.
Any thoughts?