Mary E. Graff , age 83 of Freeport, IL, passed away at home on Monday, May 11, 2020. She was born January 23, 1937 in Lock Haven, PA; the daughter of the late Clarence and Sarah (Morgan) McKague. She was a graduate of Immaculate Conception and Lock Haven Teachers College. Mary married Walter M. Graff, Sr. on May 12, 1962; he passed on September 22, 1994. She had worked as an office secretary for the Dundee Park District and the Freeport Park District, retiring in 1996. Mary was a member of Immanuel Lutheran Church of Freeport where she was also involved in the Fideles Circle and was a longtime president of the Concordia Society. She enjoyed crocheting and she loved her grandkids, never missing a sporting event or activity. Mary is survived by her daughters, Tina Thomas of Freeport and Theresa (Jeff) Williams of Princeton, IL; son, Walter M. (Denise) Graff, Jr. of North Lauderdale, FL; 4 grandchildren, Kelly Wall, Kris (Nicole) Wall, Vaughn (Amy) Piske, and Tasha (Tom) Aultman; and 7 great grandchildren, Jennifer, Ali, Liam, Bailey, Khloe, Braxton, and Boston. She was preceded in death by her parents; husband, Walter; sister, Elizabeth Johnson; and son-in-law, Wayne Thomas. A memorial service will be held at a later date. Interment will take place at Chapel Hill Memorial Gardens in Freeport. In lieu of flowers, a memorial fund has been established for Immanuel Lutheran Church. Condolences may be shared at www.walkermortuary.com.