I was able to locate Dr. Henry Walton's grave for you (took walking the cemetery twice - it is in bad shape and I missed it the first time around!) The headstone is becoming quite illegible at the top. I was only able to identify it by tracing the words with my fingers, particularly the first letters of the names, and the death date. I assume the headstone beside his is his wife; I will check to see if she has a page and/or a photo. If not, I'll upload that one, too. A lot of graves in this cemetery are in bad shape and are illegible, broken, or are unmarked entirely. It looks like someone possibly replaced Dr. Walton's wife's headstone - hers is in better shape.
RE: Photos of Porter Cemetery It was my pleasure. I am very passionate about keeping our ancester alive for future generations. I do head stone cleaning for some families that live out of town. If there is anything else you need please let me knwo.