The "Military Records" database at Ancestry.com shows that Ernest's address was 1102 Baker Street.
The 1916 Toledo city directory shows that the occupants at that address were George BOTZENHARDT, wheelwrkr, George Jr. wheelwrkr and Ernest, assemblr.
The 1920 U.S. census for Toledo, Lucas, OH shows this BOTZENHARDT family: >head, George, 63, widow, bp Germany, immigrated 1881, naturalized 1886 >son, George, jr., 31, single, bp Ohio >son, Otis, 16, single, bp Ohio (Otis would not have appeared in the 1916 directory because he was not employed.)
I cannot find any death listing on George Sr. or Otis but George Jr. d 7 Sep 1972 in Toledo. He was married when he died, so his descendants may be the only link to Ernest.