Dennis married Monica Guthmiller on 14 Mar 1970 in Tyndall, Bon Homme County, South Dakota, USA, and was divorced. Monica (daughter of Alvin Guthmiller and Elaine Schulz) was born on 27 Jul 1950 in Parkston, Hutchinson County, South Dakota, USA; died on 15 Aug 2011 in Minnesota, USA. [Group Sheet] [Family Chart]