Donald Dean Northup, 74, of Oswego, IL passed away on July 27, 2022, surrounded by his loving family. He was the devoted husband of Sharon (Hayes) Northup for nearly fifty years. Born in Aurora, IL on October 16, 1947, he was the son of the late Dean and Verdell Northup and brother to Linda Smith. Don graduated from East Aurora High School in 1965 and served as a sergeant in the United States Air Force during the Vietnam War, specializing in Electronic Countermeasures stationed in Ubon, Thailand. Following his service, he enjoyed a career of nearly 25 years at Motorola in Schaumburg and Arlington Heights, IL. Serving with the Air Force was a source of great pride for Don. He enjoyed going to air shows and watching the Air Force band perform. He was a life-long member of the VFW Post 7452 in Montgomery, IL. He was also a member of the American Legion. In retirement, Don loved spending time with Sharon traveling and participating in local senior center activities. Most of all, Don loved his family. Don and Sharon were blessed with two daughters, Heather (Michael) Stolarek of Fort Mill, SC and Holly (Edward) Fowler of Oswego, IL. Don was especially proud of his three grandchildren, Caitlyn Stolarek and Ian and Aaron Fowler. He always carried pictures of his grandchildren and loved to tell everyone he met about their accomplishments. Visitation will be held Sunday, July 31, 2022 from 4-7pm at Dieterle Memorial Home, 1120 S. Broadway in Montgomery, IL 60538. A prayer service with Fr. Jerome Leake will be held Monday, August 1 at 10am at Dieterle Memorial Home, followed by a graveside service with full military honors at Mt. Olivet Cemetery in Aurora, IL. For guestbook and directions visit www.dieterlememorialhome.com 630-897-1196