Donald J. Siglinger, 65, of Cheyenne, Wyoming, passed away March 19, 2016, at the Cheyenne Regional Medical Center. Donald was born June 18, 1950, in Greeley, Colorado, a son of the late Duane A. and Pauline (Bradsby) Siglinger. Donald served honorably in the United States Navy. He worked as a mechanic for Kendall Automotive. One of his many achievements was the task of writing to one million by hand in its entirety. He will be remembered for his love of cars, drag racing and his favorite dog, Angel. Donald is survived by his sister, Judith Kendall of Estes Park, CO. He is preceded in death by a sister, JoAnn Sawyer; and three brothers, Danny Siglinger, Dale Siglinger and Paul Siglinger. A memorial service will be held on Sunday, April 3, 2016, at 2:00 p.m. at the V.F.W., 2514 7th Avenue, Garden City, Colorado. Cremation is under the care of Schrader, Aragon and Jacoby Funeral Home.