Marilyn M. Johnston age 85, of Park Ridge, IL died on Monday, May 22, 2017 in Park Ridge. She was born in Quincy, IL on June 15, 1931. Private family services are planned with interment in Ellington Home Cemetery. Memorials may be made to the Illinois Arthritis Foundation, 35 E. Wacker Drive, Suite 2260, Chicago, IL 60601.