Marshall passed away of Multiple System Atrophy. Survived by wife Brenda; children Heather Vickers, Todd Rogers, Stephanie Darley & Mark Hogan; Grandchildren Kyle, Emily, Jordan, Grant & Sarah Caroline. A Celebration of his Life will be held in Aurora, CO on Saturday, June 12, 2:00 p.m. at the Families Home. Memorial Service will be Saturday, June 19, 2:00 p.m., Spring Hill Baptist Church, Ocilla, Georgia. In lieu of flowers donations may be made to CU Neurology Research, 1635 Aurora Ct., Aurora, CO 80045. Please share your memories of John and condolences with his family by clicking on the ""sign guestbook"" link below.