Funny - I had never heard of the name until your search and then this obituary jumped out at me this week in the Chicago Tribune (chicagotribune.com) - hope this helps.
Mary P. GylfeView/Sign Guest Book August 26, 2002 (?)
Mary P. Gylfe, nee O'Malley, 76, of Evanston, beloved wife of CARL; loving mother of Patricia, David and Suzanne; dear sister of Margaret (the late Robert) Lucas, Nancy (Patrick, M.D.) Staunton and the late John (Ann Marie) O'Malley; dear sister-in-law of Julie Gylfe, M.D.; fond aunt of many nieces and nephews. Visitation Sunday, 3 to 8 p.m. at Donnellan Family Funeral Home, 1571 Maple Ave., Evanston. Funeral Mass Monday, 11:30 a.m. at St. Mary Church, Lake St. and Oak Ave., Evanston. Interment private. In lieu of flowers, memorials may be made to the American Lung Association, 1440 W. Washington Blvd., Chicago, IL 60607-9949. Funeral info, 847-869-2900.
Did I give you switchboard.com - there are only 26 Gylfes in the U.S. listed here.