Thanks, Diana. I saw that on Findagrave, and saw the grave (Susanna's) in person when I was up there this summer. There are a few other Straits in Round Lake Cemetery, as well. I think most of them are on the findagrave website.
I have found no trace of Richard Buckmaster nor Richard Strait. My brother is convinced that they were 2 separate people, but I can't find proof either way. Anyone else have info on them?