Joseph married Mary Emily Arbogast on 26 Oct 1869 in , Pocahontas , West Virginia, United States. Mary (daughter of Solomon Arbogast and Nancy Nottingham) was born on 10 Sep 1844 in Pocahontas Co., Va/Wv; died on 4 Apr 1907 in , Pocahontas , West Virginia, United States; was buried in Warwick Cemetery, Green Bank, Pocahontas Co., Wv. [Group Sheet] [Family Chart]

1. Florence Louise Cooper was born on 12 Jun 1866 in , Pocahontas , West Virginia, United States; died on 7 May 1933 in , Pocahontas , West Virginia, United States; was buried in Arbovale Cemetery, Arbovale, Pocahontas, WV, USA.
2. Henry Snowden Cooper was born on 23 Jul 1870 in , Pocahontas , West Virginia, United States; died on 7 Mar 1903 in , Pocahontas , West Virginia, United States; was buried in Warwick Cemetery, Green Bank, Pocahontas Co., Wv.
3. William Walter Cooper was born on 2 Mar 1874 in , Pocahontas , West Virginia, United States; died on 29 Sep 1942 in , Pocahontas , West Virginia, United States; was buried in Oak Grove Cem, Hillsboro, Pocahontas Co., Wv.
4. Elsie Vivian Cooper was born on 1 Jan 1882 in , Pocahontas , West Virginia, United States; died on 6 Jun 1905 in , Pocahontas , West Virginia, United States; was buried in Warwick Cemetery, Green Bank, Pocahontas Co., Wv.