Not sure if this will be of help to you or not....
pilot.familysearch.org shows H.G.J. Garloff married Malissa Melton, 4 Mar 1870, Anderson Co TX.Seems possible that her nickname could be Allie or Mallie.
I see George Garloff, 1900 census in Houston, Harris Co TX as a widow (born Mar 1844, Germany) which tells me that she was deceased by 1900.
I noticed that Allie is shown as aged 20 in the 1880 census in Palestine, Anderson Co TX but I think this is incorrect - especially since they married in 1870.
Also in the findagrave website there is a J. C. Garloff who died May 22, 1915 (aged 10 per sexton's records) buried Palestine City Cemetery, Anderson Co TX.Since Garloff is such a rare name - I would think it is apossibility that J.C. was a child of of Henry George Garloff and Malissa Melton Garloff.At least it suggests some more research should be done to see if there is something further to prove or disprove a connection.
I saw in the 1910 census he says Henry G Garloff was married 3 times and that he has been married to Mary for 9 years and that Mary had no children.
I did see a few Meltons also buried in that Palestine City Cemetery in Anderson County, TX: Daniel Melton, died June 11, 1883; aged 9 years Rev. J. E. Melton, born Dec 27, 1814; died nov 28, 1877.
While some of my Meltons came into Texas, this does not appear to fit into my Melton branch.