Eugene William Sullivan, age 92, a resident of Niles, Illinois since 1962, passed away September 8, 2023. Beloved husband of the late Carol Sullivan (nee O'Rourke). Loving father of Patti, Jerry (Karen Hoshizaki), and Kathi Sullivan. Proud grandfather of Amy (David) Wischhusen, Kevin Setze, Brian Frenzel (Rachel Miller), Scott Frenzel, and great-grandfather of Owen and Emily Wischhusen. Dear "Uncle Duke" to Carol Pat Zenk and Richard Mizanin. Lovingly cared for by Fidelina Castenada and Edwardo Cabero. Gene was born August 25, 1931, in Chicago, Illinois to the late Eugene W. and the late Lillian (nee Hayward) Sullivan. He was a veteran of the U.S. Navy. Gene earned a B.S. in Electrical Engineering from Illinois Institute of Technology and an MBA from Loyola. He enjoyed learning new things and dabbled in chess, computers, and woodworking. He credited his long life to a vegan diet after his near-fatal heart attack about 25 years ago. The family is grateful for the support of so many people who allowed him to remain in his home, despite many physical challenges. Gene also has been a friend of Bill W. and Dr. Bob since 1982. A visitation will be held Tuesday, September 12, 2023, at 10:00 a.m. followed by an 11:00 service at G.L. Hills Funeral Home, 745 Graceland Avenue, Des Plaines, Illinois. Interment will be private in All Saints Cemetery, Des Plaines, Illinois. In lieu of flowers, donations appreciated in Eugene's name to the McDougall Foundation, P.O. Box 14039, Santa Rosa, CA 95402, https://www.mcdougallfoundation.org/donations/donation-form/. Funeral care is provided by G.L. Hills Funeral Home. For information, please call 847-699-9003 or visit www.glhillsfuneralhome.com.