Wilber Shaffer I found Wilber Shaffer's grave, but there is no marker. I'm sure of the spot because the cemetery office gave me a map with names on it so I could determine whether or not he has a marker. I took a photo of the site and will post it.
Re: Deborah Mayo I found quite a few Mayo stones (including Deborah's husband Isachar, which I posted), but did not find Deborah. I will be heading back up to NH this summer, and will hopefully do a more thorough search for her (and others).