John married Mary Ann Leininger on 24 Sep 1917. Mary (daughter of Franz Anton Leininger and Eva Rosina Becker) was born on 2 Nov 1876 in Henry County, Illinois, USA; died on 20 Mar 1965 in Illinois, USA; was buried in Saint Mary's Cemetery, Tampico, Tampico Township, Whiteside County, Illinois, USA. [Group Sheet] [Family Chart]

1. Margaret Mary Lauff was born on 31 Jul 1918 in Tampico, Tampico Township, Whiteside County, Illinois, USA; died on 6 Jun 2012 in Sterling, Whiteside County, Illinois, USA; was buried in Calvary Cemetery, Sterling, Whiteside County, Illinois, USA.
2. Mary Anna Lauff was born on 15 Feb 1922 in Tampico, Tampico Township, Whiteside County, Illinois, USA; died on 28 Jul 2001 in Prophetstown, Whiteside County, Illinois, USA; was buried in Saint Mary's Cemetery, Tampico, Tampico Township, Whiteside County, Illinois, USA.