Census of 1880 - Robert M. Harkness, Frio County, age 44, born circa 1836 in Alabama, stock raiser, wife Sarah.
Census of 1900 - Robert M. Harkness, Frio County, age 63, born April 1837 in Alabama, county treasury, wife Sarah.
FamilySearch . 19001880
Robert Marion Harkness, birth date 4/10/1837, death date 3/31/1904, burial in Pearsall Cemetery, Pearsall, Frio County. No grave marker photo.
Find a Grave .
Obituary, "Our Fraternal Dead," 12/8/1904, p. 8. Notice of death for John Adriance, death date 12/10/1903. Notice of death for Robert M. Harkness, death date 3/30/1904.
Galveston Daily News .
Robert M. Harkness.
Members of the Texas Congress 1836-1845; Members of the Texas Legislature 1846-2004 2005.