I'm trying to find out parents of my gg Grandfather Charles F. Stuart born 1866 Fort Douglas Utah. He had a brother named Frank born 1865 Fort Douglas Utah. So I'm thinking maybe his father was an officer in the US Calvary. They had a grand mother Elizabeth Pratt, I know she lived at different forts in the US, she sent Charles a bible from Fort Snelling 1880-1881. I would like to find out something of his parents.