Cecil married Esther Lillian Tobin on 8 Feb 1923 in Mount Vernon, Davison County, South Dakota, USA. Esther (daughter of Edward Tobin and Alice Brickley Cook) was born on 14 Apr 1900 in Davison County, South Dakota, USA; died on 19 Sep 1983 in Multnomah County, Oregon, USA; was buried in Bend, Deschutes County, Oregon, USA. [Group Sheet] [Family Chart]

1. John Francis (Jack) Duff was born on 11 Dec 1924 in Rocky Mount, Nash County, North Carolina, USA; died on 19 Sep 1986 in Polk County, Oregon, USA; was buried on 23 Sep 1986 in Portland, Multnomah County, Oregon, USA.
2. James Cecil Duff