Memorials may be made to American Cancer Society. John Theodore Leistner, of St. Peters, Missouri, died on Thursday, March 12, 2009 at the age of 88. Dearest husband of the late June Byrd Leistner; dear son of the late Theodore and Marie Leistner; devoted father of Donna M. (LeRoy) Foster and John F. Leistner; loving grandfather, great-grandfather and great-great-grandfather. He was a much loved uncle, cousin and was surrounded by many, many friends. John was employed as a Logistics Engineer at McDonnell Douglas before his retirement. He was a WWII U.S. Navy Veteran. He was a member of MDC Sages Retiree Club, a 3rd Degree member of Knights of Columbus, Council No. 2269, O'Fallon, MO; a 4th Degree member of St. Philippine Duchesne Assy., St. Peters, MO; member of American Legion Post #313, St. Peters, MO, VFW Post 5077, O'Fallon, MO and a was a member of the McBride H.S. Retiree Club, class of 1939. There will be a VFW 5077 Service on Sunday 7:00PM during visitation.