Griesenauer, Mary Ann (nee: Reller), of O'Fallon, Missouri, died on Sunday, January 4, 2009, at the age of 82. Dearest wife of the late Maurice E. Griesenauer; dear daughter of the late Edward B. and the late Anna Reller; loving mother of Robert E. (Carol) Griesenauer, Martha A. (Richard) Kavanagh, William J. (Diane) Griesenauer and Julie (Patrick) Malloy; cherished grandmother of 11 and great-grandmother of 4; dear sister of Walter (Lori) Reller, Virginia Theole and the late Robert Reller; dear sister-in-law, aunt, great-aunt, cousin and friend to all who knew her. She was a homemaker and a member of St. Barnabas Catholic Church in O'Fallon, Missouri where she was a former member and 1st President of the Ladies Sodality. She was also a former member and past President of the Ladies Sodality at Assumption Catholic Church in O'Fallon and was the past President of the VFW Ladies Auxiliary in O'Fallon. Memorials may be made to Alzheimer's Research.