William married Wilhelmina Elvina Forke on 11 Sep 1883 in Cook County, Illinois, USA. Wilhelmina (daughter of Johann Heinrich Forke and Anna Adelheid Meier) was born in Apr 1864 in Leyden Township, Cook County, Illinois, USA; died in 1921 in Roosevelt Township, Pocahontas County, Iowa, USA. [Group Sheet] [Family Chart]

1. Ida Anna Wolkenhauer was born on 5 Jan 1884; died on 1 Feb 1956 in Elmhurst, DuPage County, Illinois, USA; was buried in Feb 1956 in St. Johannes Cemetery, Bensenville, DuPage County, Illinois, USA.