John “Jack” Ryan, of Libertyville, IL, age 77, died after a valiant 6 year battle with cancer. He is survived by his loving wife Jean nee Johnson; children John, Anne (Mike), Mike (Tracy); and adoring grandchildren Jessica, Ryan, Jake, Katie, and Danny. He was also well loved by many cousins, nieces, nephews, in-laws, and friends. Born and raised in Buffalo, NY, Jack and his family lived in Grand Island, NY; Emerson, NJ; Gorham, ME; and Grayslake, IL while working for A. C. Nielsen his whole career. Memorial visitation will be on Sat, October 5 from 4-6pm with a memorial service at 6pm at Marsh Funeral Home, 305 Cemetery Rd, Gurnee, IL. Please visit www.marshfuneralhome.com to share a memory of Jack. In lieu of flowers, donations in his honor to PADS (Public Action to Deliver Shelter): padslakecounty.org or to the Salvation Army: donate.salvationarmyusa.org.