Haertling, Marilyn R., of St. Peters, Missouri, died on Saturday, July 16, 2011 at the age of 83. Loving wife of Elliott A. Haertling; beloved daughter of the late Richard and Helen Obergoenner; devoted mother of Gary A. Haertling; dear mother-in-law of Richard Lemire; cherished grandmother of 5 and great-grandmother of 14. Marilyn is preceded in death by her daughter, Karen Lemire and her daughter-in-law, Joyce Haertling. Memorials may be made to American Cancer Society.