John A. Lannan Jr., age 74 of Defiance, peacefully passed away on Wednesday, April 23, 2025 at The Laurels of Defiance.   
  
John was born in Chicago, Illinois on April 30, 1950 to Mary (Foley) and John A. Lannan Sr. He proudly served our country in the U.S. Army. He had an extraordinary work ethic and worked for several different painting companies. He recently enjoyed working at Sam's Club as a butcher for several years. 

He was always active and had several hobbies which included fishing, baseball, cowboy westerns-especially Matt Dillon, and crossword puzzles. He was really into history and was extremely proud of his Irish heritage. John had a unique sense of humor and loved to make people laugh. He will be greatly missed by his family and many good friends.
  
John is survived by his children, John "Jackie" Lannan III of Arlington Heights, IL, Patrick Lannan, Brian Lannan, and Kerry Lannan, all of Defiance. He also leaves behind three grandchildren, Patrick, Lia and Lillian, and his sisters, Patty Lauwers of Schaumburg, IL and Maureen Lannan of Chicago, IL. 
  
He was preceded in death by his parents, John and Mary Lannan, and his sister Betsy Lannan.
     
Visitation will be held on Friday, May 9, 2025 from 11:00 am - 1:00 pm at Schaffer Funeral Home in Defiance. A Memorial Service will be held immediately following at 1:00 pm. Fr. Jason D'Souza will be officiating. Burial of ashes will be held on May 19, 2025 in All Saints Cemetery in Des Plains, Illinois.
   
Schaffer Funeral Home was honored to assist the family with arrangements. 
  
Memorials are suggested to the family. Online condolences can be given at www.Schafferfh.com.