Erwin married Mary Jane Johnson on 22 May 1867. Mary (daughter of Oswin Johnson and Lucy Sprague) was born on 14 Jul 1846 in Hart, Oceana County, MI; died on 7 Aug 1879. [Group Sheet] [Family Chart]
Erwin married Margaret Sprague on 17 Aug 1887. Margaret (daughter of James W. Sprague and Jane Allis) was born on 16 Apr 1853; died on 20 Apr 1923 in Shelburne Falls, Franklin County, MA. [Group Sheet] [Family Chart]