Blake, I may be able to help a little in locating the grave of Isaac Pledger. I live in Athens, GA, and am a relative of the same Pledgers. John A. Pledger was my GG Grandfather, one of his sons (John S. Pledger) is my Great Grandfather. My grandfathers name was John F. Pledger (he went by Frank). So my Great Grandfather was Marshall N. Pledger's brother. Anyway, I know that some of the Pledgers are buried in the Princeton Methodist Church cemetary. I'll see if I can locate the grave. If I do, I'll let you know.