I have the CD of hosptial patients (1862-1865) that is sold at JB. There is no Sanford Defries listed there. I checked Sandford and Sanford through the years. As to last name the closest I came was this person

DeFreitas, Francis, Pvt., 114 Il. Inf., Co. G, Gunshot Wd. Right Side of Chest resulting in 2/3 disability, Disch. March 16, 65, Ward D,
Springfield. Il