John married Rebecca Snyder on 26 Nov 1854 in Kitchener, Ontario, Canada. Rebecca (daughter of John C. Snyder and Catharine Shantz) was born on 10 Apr 1835 in Ontario, Canada; died on 28 Mar 1911 in Waterloo, Ontario, Canada; was buried in Wanner Mennonite Cemetery, Hespeler, Ontario, Canada. [Group Sheet] [Family Chart]

1. Abraham Snyder Clemens was born on 23 Sep 1857 in Waterloo, Ontario, Canada; died on 3 Nov 1931 in Waterloo, Ontario, Canada; was buried in New Hope Cemetery, Cambridge, Ontario, Canada.
2. Nathaniel Clemens was born on 5 Jul 1859 in Fisher Mills, Ontario, Canada; died on 8 Sep 1942 in Toronto, Ontario, Canada; was buried on 11 Sep 1942 in Preston Cemetery, Waterloo Regional Municipality, Ontario, Canada.
3. Maria Clemens was born on 31 Mar 1861 in Waterloo Township, Ontario, Canada; died on 26 Dec 1939 in Clifford, Wellington County, Ontario, Canada; was buried in Clifford Cemetery, Clifford, Ontario, Canada.
4. Isaiah Clemens was born on 10 Jul 1862 in Waterloo, Ontario, Canada; died on 11 Jul 1907 in Waterloo, Ontario, Canada; was buried in Wanner Mennonite Cemetery, Hespeler, Ontario, Canada.
5. Caroline E. Clemens was born on 30 Sep 1863 in Waterloo, Ontario, Canada; died on 24 Jan 1900 in Waterloo, Ontario, Canada; was buried in Wanner Mennonite Cemetery, Hespeler, Ontario, Canada.
6. Nancy Clemens was born on 28 Mar 1865 in Waterloo Township, Ontario, Canada; died on 1 Nov 1957; was buried in Wanner Mennonite Cemetery, Hespeler, Ontario, Canada.
7. John S. Clemens was born on 3 Dec 1866 in Hespeler, Ontario, Canada; died on 23 Apr 1868 in Hespeler, Ontario, Canada; was buried in Wanner Mennonite Cemetery, Hespeler, Ontario, Canada.
8. Aaron Clemens was born on 26 Jul 1868 in Waterloo Township, Ontario, Canada; died on 12 Nov 1946 in Waterloo Township, Ontario, Canada; was buried in Wanner Mennonite Cemetery, Hespeler, Ontario, Canada.
9. Levi Clemens was born on 4 Apr 1870 in Breslau, Ontario, Canada; died on 19 Nov 1946; was buried in Grand Lawn Cemetery, Detroit, Michigan, USA.
10. Catherine Melinda Clemens was born on 22 Mar 1872 in Hespeler, Ontario, Canada; died on 17 Oct 1960 in Wisconsin, USA; was buried in East Lincoln Cemetery, Amery, Wisconsin, USA.
11. Ephraim Clemens was born on 9 Apr 1874 in Waterloo Township, Ontario, Canada; died on 30 Aug 1874 in Waterloo Township, Ontario, Canada; was buried in Wanner Mennonite Cemetery, Hespeler, Ontario, Canada.
12. Herbert Allan Clemens was born on 8 Jun 1876 in Cambridge, Ontario, Canada; died on 7 Oct 1930 in Windsor, Ontario, Canada; was buried in Green Lawn Memorial Gardens, Oldcastle, Ontario, Canada.
13. Minnie Rebecca Clemens was born on 8 Aug 1878 in Waterloo Township, Ontario, Canada; died on 22 Nov 1946 in Blackie, Alberta, Canada; was buried in Gladys Union Cemetery, Gladys, Alberta, Canada.
14. Mervyn Eldred Clemens was born on 22 Jun 1881 in Waterloo Township, Ontario, Canada; died on 19 Nov 1964 in Wyandotte, Wayne County, Michigan, USA; was buried in Michigan Memorial Park, Flat Rock, Michigan, USA.