Timothy K. Ziolkowski, age 32, late of Chicago formerly of Lansing. Loving son of Kenneth and Madeline (nee Witaszek) Ziolkowski. Cherished brother of Jeffrey (Amy) Ziolkowski. Proud grandson of Ruth and the late Edwin Ziolkowski and Theresa and the late Casimir Witaszek. Devoted uncle of Casey and Zoe. Dear nephew of Gloria (late Zee) Zolmierski, Debbie (Paul) Marino, Sandy Rybenski, Karen (Jim) Waclawik, Sue (Howard) Cipolla, Dave (Paulette) and the late Ron Ziolkowski. Fond cousin to many. Mr. Ziolkowski was a microbiologist with Dow Chemical Corp., 2002 graduate of the University of Illinois and a member of the Marching Illini. Visitation Sunday, 2 to 9 p.m. Funeral Monday, 9:45 a.m. from Thornridge Funeral Home (Janusz Family Funeral Service), 15801 S. Cottage Grove Ave, four blocks north of 162nd (Route 6), Dolton/South Holland to St. Jude the Apostle Church Mass 10:30 a.m. Interment Holy Cross Cemetery.