Isaac married Mary Alice Rhodes before 1886. Mary (daughter of Jason D. Rhodes and Angeline Tow) was born on 30 Oct 1868 in Culver, Marshall In; was buried in Culver, Marshall In. [Group Sheet] [Family Chart]

1. William Edward Washburn was born on 23 Apr 1887 in Culver, Marshall In; was buried on 20 Dec 1955.
2. Benjamin Fredrick Washburn was born on 16 Nov 1889 in Culver, Marshall In.
3. Mamie A. Washburn was born on 10 Oct 1891 in Culver, Marshall In.
4. Burtha G. Washburn was born on 18 Aug 1893 in Culver, IN.
5. Elsie J. Washburn was born on 3 Oct 1895 in Culver, Marshall, IN.
6. Josie E. Washburn was born on 22 Sep 1897 in Culver, Marshall, IN.
7. Isaac J Jr. Washburn was born on 26 Apr 1899 in Culver, Marshall, IN; died on 12 Jul 1927 in Alabama.
8. Nettie M. Washburn was born on 16 Aug 1901 in Culver, Marshall, IN; died in Mar 1985; was buried on 30 Mar 1985.
9. Huldia Pearl Washburn was born on 25 Oct 1903 in Culver, Marshall, IN.
10. Robert F. Washburn was born on 3 Feb 1906 in Culver, Marshall, IN.
11. Infant Washburn was born on 17 Jan 1908 in Culver, Marshall In.
12. Clara Winona Washburn was born on 5 May 1909 in IN; died on 24 Nov 1984 in South Bend, IN.