Mary Lu Oberhart, 91 of Arlington Heights was born September 10, 1927 in Chicago to A. Wesley and Cecilia (nee Prindiville) McGeoghegan and passed away February 7, 2019. Mary Lu was the beloved wife of Jack C. Oberhart; loving mother of Jack C. (Mary) Oberhart Jr., Anne (Scott) Bieda, Michael (Ly) Oberhart, Ellen Oberhart and the late Wesley Oberhart; cherished grandmother of Eric Oberhart, Meghan (Alex) Rucks, Colleen (Daniel) Ludwig, Caitlin Bieda, Joseph Bieda, Philip Oberhart, Sydney (Rory Preston) Smith, Griffin Smith and Sloane Smith and great-grandmother of Madelyn and Nora. Visitation will be Monday, February 11, 2019 from 3-8 PM at Lauterburg & Oehler Funeral Home, 2000 E. Northwest Highway, Arlington Heights and Tuesday, February 12 at Our Lady of the Wayside Church, 440 S. Mitchell Street, Arlington Heights from 8:30 AM until the time of the Funeral Mass at 9:30 AM. Interment will follow at Holy Sepulchre Cemetery. In lieu of flowers, contributions to the Alzheimer’s Association appreciated.