Robert Montgomery is listed as "partially blind" in the 1880 census.
Crossing the Dark River Henderson County, Tennessee, Obituaries 1827-1950 Brenda Kirk Fiddler Page 169
Montgomery, R. J. (The Lexington Progress, March 12, 1920) (See below) Montgomery, Frances (The Lexington Progress, March 12, 1920) R. J. Montgomery, aged about 80 years, died Monday morning in the Dunbar, Decatur County community, and his son, Frances, aged about 52, died Tuesday afternoon. Both were at Decaturville court two weeks before their death. Old man Montgomery had been blind for 60 years and was considered a remarkable character.