Duane was born on July 24, 1968 in Fort Belknap to Jeb Stiffarm and Georgia Black Wolf of Hays. He was raised in Rocky Boy by his mother and stepfather Daniel Denny. He was a proud enrolled member of the Ft. Belknap Reservation and active in The Native American Church. Duane was a Certified Mason, Certified Corrections Officer, and worked in many other fields as well. He helped others with whatever they needed. Duane spent a lot of time with his uncle Richard and aunt Martha King. Twenty years ago he was reunited with his spouse Chantel. He had two children Flint and Darrellyn Black Wolf, three stepchildren Tristin (Spencer) Cochran, Leon King, Kelly Heally and adopted son John Haakanson. Duane was preceded in death by his parents, grandparents, and several aunts and uncles. He is survived by love of his life Chantel King;his brothers Michael(* Joyce) Black Wolf of Hayes, Golden and Danson Denny of Rocky Boy; sisters Larissa Denny of Rocky Boy, Dara(Albert) Shell of hays, and Wendy Stiffarm of Browning; and numerous beloved nieces, nephews, cousins, and other extended family and friends.