Mary Patricia Mersch, nee McDonnell, age 87, of Skokie. Beloved wife of the late Robert; dear mother of Martin (Mary Beth), Marie (Len) Mrowczynski, Maureen, Margaret, Marlene (Brian Magliozzi), Marjorie (William) Horvath, Matthew (Julie Keefe), Melissa (John) Dore, and the late Michael (Nancy Varco); loving grandmother of Erin (Lukas), Mairtin (Sara), Anne (Ian), Timothy (Sara), Robert, Tracy, Kelsey (Parker), Courtney, Jenny (Jake), Laurie (Phil), Michael (Jenna), Natalie, Dominick, Sara, Will, Nora, and John; cherished great-grandmother of Gregory, Paul, and Nicholas; fond sister of the late Nancy Balog. Visitation, Friday, December 20, 2019, from 3 to 9 p.m., at HABEN Funeral Home & Crematory, 8057 Niles Center Rd., Skokie. Funeral, Saturday, December 21, at 9:15 a.m., from the funeral home, for Mass, 9:30 a.m., at St. Peter Catholic Church, 8100 Niles Center Rd., Skokie. Interment, All Saints Catholic Cemetery, Des Plaines. In lieu of flowers, memorial contributions may be made to The American Cancer Society, P.O. Box 22718, Oklahoma City, OK, 73123-1718. Funeral info: 847.673.6111.