Dennis was born on August 29, 1956 to Charles and Clara (Trottier) Gwin in Glendive, MT.
He worked throughout the area in the farming section. He moved to the Anaconda area in 1972 and worked on various farms.
Dennis is survived by the love of his life Julie, children; Dennis (Jennifer) Gwin Jr., Bernadette Rich, Billie Kline and Amanda (Morgan) Johnston, brothers and sisters, Francis (Michelle) Gwin, Pete Gwin, Maynard (Julie) Gwin, Margaret (Earl) Fode, Clara (Fee) Vering, Martin (Butch) Gwin (Kay), Larry (Robin) Gwin, Mary Kellog and Dave Short, brothers and sisters-in-law, Alvin (Zelma) Fode, Mark (Theresa) Fode, Mike Fode, Brent Fode, Linda Clark, Peggy (Tom) Harvey, Marylou (Dave) Hartman, Susan (John) Lamb, Janet (Tom) Syness and Cheryl (Hal) Fayant, as well as numerous grandchildren, cousins, nieces, nephews and many friends.
Dennis is preceded in death by his mother Clara Short, father Charles Gwin, brothers and sisters, George Gwin, Steven Short, Raymond Short, Florence Sleight, Edna Gasco, and Helen Ward, mother and father-in-law Lena and Earl Fode, sisters and brother-in-law, Rita Gardner, Brenda Patterson and Kevin Fode.
Due to Covid-19, a Private Family Service will be held on Monday, June 1, 2020 at the New Hill Cemetery. Social distancing will be implemented per family wishes.