In the 1880 census, I did find Andrew "Jackson" HILLIS' daughter (Selina Jane) actively using the "HILHOUSE" surname, before her marriage to J.A.S. HARRISON (1888). She was listed in the household of her sister & brother-in-law (Minor W. & Elizabeth BUTLER), and was "single", 35 years old. Also listed, was Mack HILHOUSE, age 6 years, b-AL. I believe this to be her & Elizabeth's nephew, son of John Mac HILLIS... but have no proof at this point. John's first wife died sometime between 1876-1880. He remarried in 1881.