William married Pauline Dawurske 4 May 1894, Manitowoc, Wisconsin, USA. Pauline (daughter of Albert G. Dawurske and Bertha Wodtke) was born 6 Aug 1874, Pommern; died 27 Dec 1935, Kiel, Manitowoc, Wisconsin, USA; was buried 30 Dec 1935, Schleswig, Manitowoc, Wisconsin, USA. [Group Sheet]

1. Edwin Backhaus was born 30 Apr 1895, Kiel, Manitowoc, Wisconsin, USA; died 17 Jan 1941, Sheboygan, Wisconsin, USA; was buried 20 Jan 1941, Schleswig, Manitowoc, Wisconsin, USA.
2. Norma E. Backhaus was born 2 Nov 1899, Wisconsin, USA; died 24 Jan 1984, Manitowoc, Wisconsin, USA.