Mary Lou Mainzer, nee Terrill, 94, of Morton Grove, beloved wife of the late Bill; loving mother of Susan (Kate), Madeline, and Tricia "Patty" Mainzer-Milo; dear grandmother of Mackenzie Bowen and Zachary Milo; cherished great grandmother of Bobby and Ryan Bowen; fond sister of the late Pringle (June) Terrill. Memorial visitation at Simkins Funeral Home 6251 Dempster St. Morton Grove, IL 60053 on Sunday, January 3rd from 2:00 p.m. until time of memorial service at 4:00 p.m. In lieu of flowers, donations to Shriners Hospitals for Children 2211 N. Oak Park Ave. Chicago, IL 60707 appreciated. (847) 965-2500