My GGrandfather, William Moncrief (Keith) Silverthorne spent his final days in Hobart, Kiowa,Oklahoma. He returned to the former Native American Reservation land to die. This was in 1947. According to my paternal Uncle, Ross Dennis, William Silverthorn was of Native American Blood, but what tribe, I am unsure of. I am seeking possible burial grounds for his grave in a cemetery that existed in 1947.