05/06/2026
John Lawrence LaDeur, of Carol Stream, a beloved husband, father, grandfather, brother, and friend, to so many, was called by the Lord to join Him in heaven on May 5, 2026.
John was born on January 22, 1951 in Villa Park, IL, the second of six children to Larry and Joyce LaDeur. He graduated from St. Francis High School in 1969 and went into the workforce, selling women’s shoes for a brief time before beginning a lifelong career in real estate.
He and his wife, Pat, were a top realtor team, who gave of their time freely and always made you feel special. If you worked with John and Pat to purchase a home, even if it was 25 years ago, they would personally deliver a Christmas gift to each of their former clients. This is a reflection of who they are as people, and how much they valued personal relationships.
From an early age, John loved baseball. His ability to remember specific details of baseball games and players was unparalleled. His passion for the White Sox extended to his son, Bob, and the two would often play catch and discuss what was next for the Sox. John followed other sports as well, particularly football. He enjoyed playing in the family football pool, and played fantasy football, where he and son, Bob, were tough to beat. He also made time for golf with his brothers, where they typically did more laughing than golfing.
John was 13 years old when his father took him fishing in Canada. Thus, began a 60-year fishing career, always on the same lakes, and he cherished fishing with his father, his brothers, children, grandchildren, nephews, nieces, and sisters-in-law. He loved the time with family and catching fish.
He enjoyed traveling, especially annual trips to Silvercryst with family, and several trips to Hawaii. His favorite spot was sitting in a chair, basking in the sun, with his feet dipping in shallow water.
John was a person of strong faith and enjoyed his time teaching religious education. He had a sharp mind, a terrific memory, and a great sense of humor. He loved to laugh and his smile was absolutely infectious. His positive attitude, his warmth, and that smile….you couldn’t be around him and not feel it.
Preceding John in death are his loving parents, Larry and Joyce LaDeur, his brother, Tom LaDeur, and his granddaughter, Madyson Weiss.
John is survived by his wife of 33 years, Pat LaDeur, who John credited as the reason he persevered through his battle with cancer and subsequent health challenges. He loved his family beyond measure. He is also survived by children Tina (Pete) Brouwer-Kraska, Kelly (Chris) Ashline, Bob (Angela) LaDeur, Eric (Meredith) Boye, Andrea (Scott) Sieczkarek, Jennifer Boye, and grandchildren Ayla Brouwer; Katie Kraska; Cora and EllaMarie Weer; Peter and Leah Ashline; Ani and Emi LaDeur; Dominick, Adon, Hosanna, Axel, Isaiah and Arabella Boye; Charles and Wesley Sieczkarek; and Betty Boye-Arnell, who were a constant source of immense pride and joy. John was a
beloved brother and friend to his sister, Karen (Tom) Post, Bob (Kim) LaDeur, Jeff (Debbie) LaDeur, and Jim (Susan) LaDeur.
Visitation services will be held on Monday, May 11th from 3:00 PM - 8:00 PM at Bucaro Funeral Home, 485 W. Army Trail Road, Bloomingdale, IL, 60188.
Funeral Services will be Tuesday, May 12th, with prayers at 9:30 AM at Bucaro Funeral Home, proceeding to Corpus Christi Catholic Church for 10:00 AM Mass. Interment will follow at All Saints Cemetery in DesPlaines.
In lieu of flowers, the family requests memorial contributions be made in John’s memory to the American Liver Foundation:
https://liverfoundation.org/how-you-can-help/ways-to-give/donate-now/
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