Joseph married Mary Louisa Lambrix on 6 Jul 1875 in Michigan, USA. Mary (daughter of Lorenz Lambrix and Louisa George) was born on 20 Jan 1854 in Buffalo, Erie County, New York, USA; was christened on 22 Jan 1854 in Buffalo, Erie County, New York, USA; died on 31 Dec 1899 in Ash Township, Monroe County, Michigan, USA. [Group Sheet] [Family Chart]

1. Margaret Casper was born on 6 Apr 1876 in Ash Township, Monroe County, Michigan, USA; died on 22 Aug 1885 in Ingersoll, Midland County, Michigan, USA.
2. William Lawrence Casper was born on 19 Jun 1878 in Ash Township, Monroe County, Michigan, USA; died on 28 Jul 1878 in Ash Township, Monroe County, Michigan, USA.
3. Helen Elizabeth Caspar was born on 15 Oct 1879 in Ash Township, Monroe County, Michigan, USA; died on 13 Oct 1919 in Michigan, USA.
4. Joseph Frank Caspar was born on 13 Mar 1882 in Ash Township, Monroe County, Michigan, USA; died on 29 Jan 1904 in Michigan, USA.
5. Anna Cecilia Casper was born on 29 May 1885 in Michigan, USA; died on 1 Jan 1971 in Detroit, Wayne County, Michigan, USA.
6. Mary Lucy Casper was born on 25 Oct 1887 in Ash Township, Monroe County, Michigan, USA.