BURKHARDT, Mary, age 89, of Southgate, April 24, 2010. Beloved wife of Jack. Loving mother of Barbara Brock (Dominic Mammola) and Karen (the late James) Keller. Dear grandmother of Michael (Andrea), Rebecca (Brad), Jason (Jana) Brock, James Keller and great-grandmother of Alexis Wrightson, Alaina, Marissa and Cameron Brock. She is also survived by many nieces, nephews and cousins.