Hackworth, Mary L., of O Fallon, Missouri, died on Friday, February 29, 2008 at the age of 78. Dear daughter of the late Ted Walker and Ada Catron, dearest wife of the late Bobby L. Hackworth, loving mother of Brenda Lee (Wayne) Treu, David Carl (Tammy) Hackworth, Mary Ann (Todd) Grannemann, and Bobbie Sharon (John) Rose, cherished grandmother of 14 grandchildren and 3 great-grandchildren, loving sister of Norma Jean (John) Houghton and sister-in-law of Melba Walker. She is preceded in death by brother, Charles Walker. She was a member of the Florissant Chapter of Eastern Star.