Marshall, William W., age 72, of Centerville, passed away on Friday, October 7, 2011. Bill retired as Vice President from DSI with over 25 years of service. He was an avid model railroading enthusiast. He received an engineering degree from University of Cincinnati, a computer science degree from University of Dayton and his MBA from Yale University. Bill is survived by his wife of 40 years: Sharon Marshall; daughter: Cynthia Marshall; son: William M. Marshall; two granddaughters: Annabella & Olivia; brothers: Thomas & James Marshall; sister: Betty Huggard; and numerous other family members and friends. Funeral services will be held at 11:00 A.M. on Thursday, October 13, 2011 at Newcomer Funeral Home (South Chapel) 3940 Kettering Blvd., Kettering. Interment will follow the service at Calvary Cemetery in Kettering. The family will receive friends at the funeral home on Thursday from 10:00 A.M. until time of service.