William married Catherine Michels on 30 Oct 1899 in Grand Rapids, Kent County, Michigan, USA. Catherine (daughter of Peter Michels and Mary Elizabeth Lambrix) was born on 23 Oct 1878 in Jamestown Township, Ottawa County, Michigan, USA; died in 1939 in Grand Rapids, Kent County, Michigan, USA. [Group Sheet] [Family Chart]

1. Leo Herman Siegel was born on 5 Jan 1901 in Grand Rapids, Kent County, Michigan, USA; died in 0Jul 1967 in Muskegon, Muskegon County, Michigan, USA.
2. Antoinette Siegel was born in 1903 in Grand Rapids, Kent County, Michigan, USA.
3. Edmund J. Siegel was born on 22 Sep 1904 in Grand Rapids, Kent County, Michigan, USA; died on 5 Nov 1979 in Muskegon, Muskegon County, Michigan, USA.
4. Walter M. Siegel was born in 1907 in Grand Rapids, Kent County, Michigan, USA.
5. Dorothy Siegel was born in 1908 in Grand Rapids, Kent County, Michigan, USA.
6. Lenora Siegel
7. Loretta Siegel
8. Leona Siegel
9. Baby Siegel was born on 24 Dec 1917 in Michigan, USA; died on 24 Dec 1917 in Michigan, USA; was buried on 26 Dec 1917 in Michigan, USA.