William J.H. "Bill" Sisson, Jr. of Belvidere formerly of North Riverside and Forest Park, age 73. Beloved husband of Cynthia, nee Rajacic; loving father of William Sisson, Fallon (Steven) Kline and the late Christopher Sisson; proud grandfather of Charlotte, Alexander and Andrew Kline; dear brother of Sharon (James) Thomas, Wesley (Diane) Sisson and Warren (Nadine) Sisson; brother-in-law of Joseph (Carrie) Rajacic; fond uncle of Jon, Sarah, Michael, Mark, Michelle, Andrew, Amanda, Shane, Brian, Amanda, Amy and Annie; great-uncle to many and great great-uncle of two; special "cousin-sister" of Kimberly Wilhelm. A true believer in God, he consistently assisted others throughout his lifetime as a well-recognized Medical Technologist for over 50 years. He spent the majority of his medical career at the former ROBI (now Gift of Hope) medical center. Bill was an avid old-time radio and television buff. John Wayne and Bill's father are who he emulated, and he was always helping everyone. Bill loved spending summers in Lake Koshkonong, WI and he enjoyed being outdoors fishing, hunting, snowmobiling and skiing. Mostly he loved spending time with his family, children and grandchildren. Family and friends will be received at the Conboy-Westchester Funeral Home, 10501 W. Cermak Road, Westchester on Friday, January 17, 2025 from 3:00 p.m. to 8:00 p.m. Funeral Saturday 9:30 a.m. until time of Chapel Service 10:30 a.m. Interment private. In lieu of flowers, memorials appreciated to St. Jude Children's Research Hospital (www.stjude.org) or Wounded Warrior Project (www.woundedwarriorproject.org). For funeral info 708-F-U-N-E-R-A-L.