John “Dan” Nilles, age 85, of Downers Grove and Roselle.  Beloved husband of the late Catherine (nee Stevens) for 60 years. Loving father of Kathleen (Ian Reid) Nilles, Daniel Nilles, Denise (Brian) Notz, and the late Doreen Nilles. Devoted grandfather of Graham, Kiera and Trea. Dear brother of the late Patricia (late Henry) Sitko; brother-in-law to the late Robert (Jan) Stevens; fond uncle and great uncle to many. US Army Reserve Veteran. Services and interment will be private. Memorials in Dan’s memory may be made to Pancreatic Cancer Action Network, pancan.org. Arrangements entrusted to Hallowell & James Funeral Home, 630-964-6500.