John married Mary Wetter on 26 Mar 1889 in Iowa, USA. Mary (daughter of Philipp Wetter and Katharina Veiock) was born on 6 May 1868 in Sherrill's Mound, Dubuque County, Iowa, USA; died on 25 Apr 1948 in Iowa, USA; was buried in Sherrill Presbyterian Cemetery, Sherrill, Peru Township, Dubuque County, Iowa, USA. [Group Sheet] [Family Chart]

1. Katherine Susanna Haltmeyer was born on 8 Mar 1892 in Iowa, USA; died in 0May 1986 in Minneapolis, Hennepin County, Minnesota, USA; was buried on 31 May 1986 in Evergreen Cemetery, Colorado Springs, El Paso County, Colorado, USA.
2. Eleanor Haltmeyer was born on 4 Oct 1895 in Iowa, USA.
3. Carl Harold Haltmeyer was born on 16 May 1899 in Dubuque County, Iowa, USA; died in 0Jun 1977; was buried in Oakland Cemetery, Manchester, Delaware County, Iowa, USA.