Donald (Don) M. Marshall, Jr. of Endwell, NY died on July 16, 2024, after a long and courageous battle with Parkinson’s. He is survived by his loving wife of 56 years, Illene; two sons Don III and Tim (Carol); daughter Kelly (Tim) and six grandchildren. He is also survived by his two sisters, Deborah and Heather and many nieces, nephews and cousins. Don, a graduate of Clarkson University, retired as a Lieutenant Colonel in the United States Army after 38 years of service and as a manager at IBM after 44 years of service. He was a loving and dedicated husband and father. He will be deeply missed by all who had the privilege of knowing him. A Funeral Mass for Don will be held on Monday, July 22 at 11:00 am at the Church of the Holy Family, 3600 Phyllis St., Endwell, NY. The family will receive friends at the Church from 10:00 am until Mass begins. Burial will be private. In lieu of flowers, expressions of sympathy in his memory may be made to The Michael J. Fox Foundation for Parkinson’s Research.