There are a few RSC members mentioned in the St. Matthew's Anglican Church Cemetery transcription, published by the Ottawa Branch of the Ontario Genealogical Society.
The short section on the Royal Staff Corps says "Members of the Royal Staff Corps who remained in Grenville after the construction of the Grenville-Carillon Canal and were buried in this cemetery: Thos. Collins #52 (stone #), John Lockley #68, Thomas Taylor #28 Other members of the Royal Staff Corps who remained in Genville and who have descendants buried in this cemetery: Nathaniel Boyd, Thomas Foreman, Joseph Hambly, George Hopper, Andrew Kerr, Archibald Livingstone, David Reeves." The endnotes say that George Hopper, from Ireland, is buried beneath St. Matthew's Church. Actually, I think the church is gone, now.
Thank you for inviting me to the Scotch Road Cemetery meeting. I must decline because I live so far away. I live in South Florida. However, I have visited the cemetery. I was pleasantly surprised to find that a cemetery in such a remote spot would be kept up rather well. It was quite an adventure for two people, my husband and I, who are used to sea level, to drive those mountainous roads in search of the Scotch Road Cemetery.