William "Bill" DeCoster, 74, of Streamwood; beloved husband of the late Mary; loving father of Mary, Roger and the late William, Jr. and Richard; cherished grandfather of Krystal (Nicholas) Sherick, Zachary and Charlene and great-grandfather of Keira Sherick; 8 siblings. Visitation Fri, Nov. 21 3:00-9:00 PM at the Countryside Funeral Home 1640 Greenmeadows Blvd, (at Barrington Rd.) Streamwood/Schaumburg. Funeral services Sat, Nov.22 11:00 AM at the funeral Home. Interment St. Michael the Archangel Cemetery. Please omit flowers.