Jacob married Cecilia Atilda Helfrich about 1909 in Belleville, Saint Clair County, Illinois, USA. Cecilia (daughter of Jakob Helfrich and Maria Magdalena Schellmann) was born in 0Apr 1884 in Belleville, Saint Clair County, Illinois, USA; died on 23 Mar 1947 in Belleville, Saint Clair County, Illinois, USA; was buried in Walnut Hill Cemetery, Belleville, Saint Clair County, Illinois, USA. [Group Sheet] [Family Chart]

1. Lydia Mary Wiesen was born on 9 May 1912 in Belleville, Saint Clair County, Illinois, USA; died on 11 Feb 2002 in Tallmadge, Summit County, Ohio, USA.
2. Paul Stephen Wiesen was born on 26 Dec 1914 in Belleville, Saint Clair County, Illinois, USA; died on 29 Jan 1972 in Illinois, USA.
3. Cletus Arthur Wiesen was born on 22 Apr 1917 in Belleville, Saint Clair County, Illinois, USA; died on 6 Jun 1998 in Rosenberg, Fort Bend County, Texas, USA.
4. Aurelia H. Wiesen
5. Mildred Marie Wiesen was born on 21 Dec 1922 in Belleville, Saint Clair County, Illinois, USA; died on 9 Sep 2005 in Santa Rosa, Sonoma County, California, USA.
6. Clarence A. Wiesen was born on 9 May 1926 in Belleville, Saint Clair County, Illinois, USA; died on 31 Mar 2000 in Belleville, Saint Clair County, Illinois, USA.
7. Rosemary Katherine Wiesen was born on 5 Oct 1928 in Belleville, Saint Clair County, Illinois, USA; died on 26 May 1993 in Santa Ana, Orange County, California, USA.