Duane was born on March 17, 1939, at Brooklyn, Iowa to Owen and Esther Hummermeier O'Halloran. He was raised in Brooklyn and graduated from Brooklyn High School with the Class of 1957. Following his education he enlisted in the United States Army and served until December of 1960. On April 22, 1958, he was married to Betty Diehm at Fort Leonardwood, Missouri. The couple made their home in the Malcom area and he owned and operated Duane's Electrical Service. Duane was a member of the Madison Church of Christ and was baptized in the Upper Iowa River near Lime Springs, Iowa. He was an avid outdoorsman and enjoyed spending time with his family at their cabin. He also enjoyed doing handyman work and spending time in his shop. Duane is survived by his wife, Betty O'Halloran of Malcom; four sons, Daniel (Brenda) O'Halloran, Ronald (Jennifer) O'Halloran, Jerry (Jennifer) O'Halloran and Timothy (Sharla) O'Halloran, all of Grinnell; ten grandchildren; and one brother, Leland L. O'Halloran of Fort Dodge, Iowa. He was preceded in death by his parents and one brother, LaVerne E. O'Halloran. Memorials may be directed to Grinnell Regional Hospice.