My great-grandfather's name was Roy Gillham. He disappeared from the S. Illinois/St. Louis area around 1906. He would have been born sometime probably between 1870-1886. Roy may have been a middle name or shortened version of something else. He married Mabel Brown (daughter of Col. Wm.Robert Brown of Metropolis, IL). His father may have raised horses in s. Illinois. Any info would be greatly appreaciated.