John Robert Boyd that you asked about died in service, young and unmarried. About ten years ago I completed the research and application materials for two ladies to join the United Daughters of the Confederacy on the service of John Robert Boyd. He was their uncle-- not great uncle or great-great uncle, but he was their uncle. Both of these ladies are now in their 90's and are delightful. If you will email me privately, I will tell you how to contact them if you are interested in discussing their Boyd family with them.
Lynda Lowery
LTLowery9050@aol.com