William 'Bill' J. Clark, Sr. Entered into eternal life Saturday, May 4th, 2013 at the age of 91. He was the beloved husband of the late Vivian L. Clark; Loving father of Carolyn (Ben) Warning Townsend, William 'Bill' (Tina) Clark, Jr., Cheryl 'Cheri' (Frank) Porter, Donna (Kevin) Nelson, and Robert 'TY' Clark; Cherished grandfather of Erich (Susan) Warning, Jeff Warning, Alyssa Clark, Lindsay (Kurt) Ferrara, Jason (Michelle) Porter, Jaime (Tim) Merkel, Jana Porter, Jessica (Jason) Brandt, Adam (Nora) Nelson, Jeremy (Beth) Nelson, Breanne Nelson, Carrie Nelson, Travis (Greer) Clark, and Tanner Clark; 17 great-grandchildren, and 1 great-great grandchild. Bill worked as a mechanical engineer with Caterpillar, Inc. in Joliet, IL until he retired. One of the things he enjoyed most in life was taking his family on vacations every summer to the mountains, Mexico, and the East Coast. He was also an inventor of many amazing things through the years. Visitation will be Monday, May 20th, 2013, from 5 p.m. until 6 p.m. at the Waukesha Bible Church, S53 W24079 Glendale Rd, Waukesha, WI 53189. A Memorial Service will follow at 6 p.m. Cards or memorials may be sent to the church.