John "Jack" Doyle 75, of Eldorado, Illinois, passed away on May 3, 2025. Jack was born in Eldorado, Illinois to the late Dr. John E. and Joyce Doyle. He grew up in Ridgway, Illinois and graduated from Western Military Academy in Alton, Illinois and Southeastern Illinois Community College. Jack loved spending time on the “homestead” with the late Millie Mees his beloved companion of twenty-five years, their family of animals, and friends. He is survived by his sister, Cynthia Drone; nieces, Alison and Jennifer; and Millie’s daughters, Theresa and Cindy. He was preceded in death by his parents, sister, Patti and Millie. Burial service will be held on Friday, June 6 at 11:00 a.m. at St. Joseph's Cemetery, Ridgway, Illinois. Father Thomas Barrett will officiate.  Condolences and expressions of sympathy may be sent to the family via the website www.colonialterracefuneralhome.com