Denis was born on January 4, 1939 in Loveland, CO to Irvin and Julia (Chance) Martin. He graduated from California State University in San Diego. He pursued a career in Social Work until his retirement in 2010.
He was a member of Good Shepard Catholic Church in Denver. In his free time Denis enjoyed reading, going out with friends, traveling and attending the performing arts.
Denis is survived by his sister Diane Goulet; his nieces Julie Cross, Lynette Margetts, Elaine Goulet, Erin Margetts, Rachel Margetts, Nadia Bannour, and Selma Bannour; and his nephews Jason Cross, Cody Cross, Dylan Ebbs and Ramy Bannour.