My Sparks family was from Queen Anne's County, Maryland and at some point the family moved to Baltimore, MD. Samuel was a very common name for the males in the family and it has made it a challenge to distinguish between the families. Another common name was Robert, so that would be a guess for the middle initials. I suspect these first two death notices are not my direct family as I don't think they were in Baltimore yet, but the last one may be related to mine. I definitely have more research to do on this family to sort these all out!