John married Karolina Mandery about 1871 in Cincinnati, Hamilton County, Ohio, USA. Karolina (daughter of Johannes Jakob Mandery and Katharina Schäfer) was born on 31 Dec 1849 in Silz, Pfalz, Bayern; was christened on 1 Jan 1850 in Silz, Pfalz, Bayern; died on 24 Nov 1917 in Cincinnati, Hamilton County, Ohio, USA; was buried in Saint Mary Cemetery, Saint Bernard, Hamilton County, Ohio, USA. [Group Sheet] [Family Chart]

1. Catherine Kemper was born on 3 May 1872 in Cincinnati, Hamilton County, Ohio, USA; died on 1 Dec 1949 in Cincinnati, Hamilton County, Ohio, USA.
2. Caroline Kemper was born on 31 Jan 1874 in Cincinnati, Hamilton County, Ohio, USA; died on 15 Dec 1949 in Cincinnati, Hamilton County, Ohio, USA; was buried on 17 Dec 1949 in Saint Mary Cemetery, Saint Bernard, Hamilton County, Ohio, USA.
3. Frank Kemper was born on 1 Mar 1876 in Cincinnati, Hamilton County, Ohio, USA; died on 9 Jan 1945 in Ohio, USA.
4. Rose Kemper was born in 0Dec 1877 in Cincinnati, Hamilton County, Ohio, USA; died on 4 Jan 1959 in Cincinnati, Hamilton County, Ohio, USA.
5. Henry C. Kemper was born on 6 Dec 1879 in Cincinnati, Hamilton County, Ohio, USA; died on 16 Sep 1947; was buried in Vine Street Hill Cemetery, Cincinnati, Hamilton County, Ohio, USA.
6. Theodore Charles Kemper was born on 20 May 1882 in Cincinnati, Hamilton County, Ohio, USA; died on 4 Sep 1946 in Ohio, USA.
7. Lillian Mandery Kemper was born in Aug 1884 in Cincinnati, Hamilton County, Ohio, USA; died on 6 Oct 1968 in Cincinnati, Hamilton County, Ohio, USA.

John married Mary Theresa Burlage on 3 May 1910 in Cincinnati, Hamilton County, Ohio, USA. Mary was born on 8 Sep 1860 in Indiana, USA; died on 3 Mar 1945 in Cincinnati, Hamilton County, Ohio, USA. [Group Sheet] [Family Chart]