Margaret A. “Peggy” Callaghan (nee Sullivan), age 75. Beloved wife of the late George P. Callaghan; loving mother of Timothy (Ann), Michael (Monica), and Katherine Callaghan; proud grandmother of Jack, Mary Claire, Maggie, and Danny; devoted sister of Rosemary (Thomas) Hartnett, the late James, Ret. CPD (late Isabell), the late John Sullivan, and the late Norine Sullivan; dear sister-in-law of Margaret (Dr. Thomas) Doyle, Patrick Callaghan, Theresa (John) Giblin, and the late Bernice Callaghan; daughter of the late James and late Nora Sullivan; aunt and friend of many. Visitation 3 to 9pm Tuesday, March 6 at Hallowell & James Funeral Home, 1025 W. 55^th St., Countryside.  Funeral Mass 10:00am Wednesday, March 7, St. Cajetan Catholic Church, 2445 W. 112^th Street, Chicago, IL  60655. Interment Holy Sepulchre Cemetery, Alsip. Funeral Info: 708-352-6500