Leonard J. “Butch” Jennen, of Mesa, Arizona, passed away at home peacefully with his family by his side on July 31, 2013 at the age of 87. He was born February 10, 1926 in Hillhead, South Dakota to Martin and Gladys [Bratsveen] Jennen. From 1965 – 1991 he lived in Montana with his family; he was an avid outdoorsman who enjoyed hunting big game and fly fishing. He also enjoyed working with his hands doing some woodworking. Leonard is survived by his loving wife of 50 years Gwendolyn Jennen; daughter Robin (Shannon) Mann; grandchildren Nicole Hurst and Ryan Mann and his sisters Helen Skogen-Campbell and Anna Marie Hansen as well as numerous nieces, nephews, cousins and friends. He was preceded in death by his parents and eight of his siblings, Eugene 'Shorty' Jennen, Geraldine 'Gerry' Palm, Dorothy Elfern Jones, Maynard Jennen, Donald 'Rick' Jennen, Theodore 'Teddy' Jennen, Leo Jennen, Josephine 'Josie' Morgan.