John M. Warren

Jun 3, 2019
Warren, John news


3:00 pm on Thursday, June 13, 2019 at First United Methodist Church (614 Randolph Street in Waterloo)


4:00 - 7:00 pm on Wednesday, June 12, 2019 at Kearns Funeral Service, Kimball Chapel where a vigil service will be held at 7:00 pm 


Waterloo Memorial Park Cemetery


First United Methodist Church or American Cancer Society


John M. Warren, 76, of Waterloo, died on June 3, 2019 at Saint Mary’s Hospital in Rochester, MN.  from complications of cancer.

            He was born on January 15, 1943 in Chicago, Illinois; the son of Irwin Diamond Warren and Frances Walburga Marsili Warren.

            John graduated from Waterloo West High School in 1961. He earned his Bachelor of Science degree from the University of Iowa in 1965, and his Doctor of Jurisprudence degree from Drake University Law School in 1968.

            He married Connie Crow July 15, 1963; they later divorced.  He then married Sandra “Sandie” Berkenes Tate on May 26, 1973 in Waterloo.

            There was never an end to learning.  He was always researching, testing, teaching himself new things, and finding a “better process”.  John strove consistently to better himself.  He was happy to also better others by sharing (forcing) knowledge on them.  “Did you read the manual?”

            His first job was working for the family trucking company, Warren Transport, while still in high school.  He would be employed later as their corporate council during his time practicing law.  He remained on at Warren Transport as a board member for many years to follow.

            John practiced law for 10 years in Waterloo, working for the City and also founding a private firm.  In 1978, his dreams and ambition took him down a very different path.  He pursued his passion for computers and established Warren Computer Center.  He kept that dream afloat with hard work and optimism (two of his strongest traits) for nearly 30 years.  In 2007, John took over as president of Power Engineering and Manufacturing,  This gave him the opportunity to pursue in engineering, a life long love of his.  During his years at PEM, he faced many challenges, forged many relationships, and enthusiastically worked 60+ hours per week, right up until his hospitalization.  While hospitalized he continued to work whenever he could from his phone and laptop, even holding a video conference.  His engineering mindset stayed strong until the end as he was determined to design and manufacture a “better hospital bed” upon his release.     

            Over the years John enjoyed skiing, fishing, bowling, and golf.  He also loved home improvement projects, buying and collecting tools, and spending time with family, (especially while doing projects).  He watched Hallmark movies (John appreciated a good cry), mysteries, listening to country music and self help books.  He also dabbled in hoarding, but not to worry, John had a place for everything and everything in place (In theory).

            In the mid-seventies, John bought a plane and loved flying.  He loved to travel in general, (when he could tear himself away from work).  Many happy memories were made on family vacations, as well as business trips, and trips with friends. 

            He is survived by his wife, Sandra “Sandie” Warren of Waterloo; four daughters, Ginger (Scott) Knapp of Rochester, MN., Terri Tate of Waterloo, Kimberly (Jason) Dahl of Rochester, MN., and Susie (Kevin) Karns of Waterloo; a son, John (Kathie) Bergstrom of Florida; 18 grandchildren: Taylor, Logan, Kennis, April (Brian), Whitney, Zach, Noah, Maddy, Claire, Adam (Leslie), Brooke (James “Shaggy”), Johnathon, Kaden, Kylie, Sebastian, Mickey, Amber (Jeremy), and Tyler; nine great grandchildren, Lilliana, Gideon, Judah, Ivy, Erikson, Paisley, Michael, Chase, and Athena; a brother, George (Mary Ellen) Warren of Waterloo; two sisters, Donna (Vern) Nelson of Waterloo, and Deborah (Mike) Kennedy of Camarillo, CA; mother-in-law, Phyllis Berkenes of Clarion, IA; and many cousins, nieces, and nephews. 

            John was preceded in death by his parents; daughters, Gina and Christina Warren; grandchildren, Christian and Laura Karns; sisters, Mary Ellen Molinaro, Frances, and Jenny Mae Warren; a brother, Irwin Warren; a brother-in-law, Robert “Bob” Molinaro; a nephew, Henry Molinaro; and a niece, Jody Nelson. 


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  1. Kevan and Shelley Cortright | Jun 10, 2019

    To the entire Warren Family,

    We are so very sorry you must endure the loss of John.

    You have our prayers and sympathy for support.

    God bless and give you strength.

    Sincerely, Kevan and Shelley Cortright

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