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BORN
1952
DIED
2025
Mark O'Brien Obituary
November 5, 1952 - May 10, 2025
Mark William O'Brien, 72, passed away on May 10, 2025, in Waterloo, Iowa.
Born on November 5, 1952, Mark proudly served his country in the United States Navy. Following his military service, he dedicated many years of hard work at the John Deere foundry. Known for his outgoing nature and selfless spirit, Mark touched the lives of many and had a deep love for animals.
He is lovingly remembered by his two sons: Jon (Gretchen) O'Brien of Sioux City, Iowa, and Jeff O'Brien of Evansdale, Iowa; as well as three cherished grandchildren: Adrianah, Hailey, and Liam. He is also survived by his sisters Liz Beckman, Linda O'Brien, and Barb Schaefer.
Mark was preceded in death by his parents, John and Charmaine O'Brien, and his brothers Michael and Dennis O'Brien.
A Celebration of Life will be held on June 7, 2025, from 1:00 to 4:00 p.m. at the Evansdale Amvets located at 706 Colleen Ave., Evansdale, Iowa.
May his memory bring comfort to those who knew him.
To plant trees in memory, please visit the Sympathy Store.
Memories and Condolences
for Mark O'Brien
4 Entries
Kathy Kessel
June 13, 2025
My memories of Mark are of us growing up. Little brother of my best friend Liz. I loved all the O´Brien family So sad all the boys are gone. My sincere condolences if I had seen this on time I would have been there to say goodbye to a very sweet guy.
Jenny and Clint Bagenstos
June 8, 2025
Jon and Jeff I am so sorry to hear of your Dads passing. We always enjoyed Sunday afternoon ribs or pizza at your parents house. He loved showing the kids Jill the deer and was always so upbeat and happy whenever we meet. May the memories you have give you peace at this time.
Joyce Ackerman
June 5, 2025
Grief can be so hard, but our special memories help us cope. Remembering you and your loved one today and always. Mark made such a impact on everything he did. He and I did some work for my Aunt, and also some remodeling of the Waterloo house. I'm also sorry to hear of the passing of Dennis, we were not aware of that. From Joyce and Lois Ackerman Who by the way is still living independently just 7 blocks down the road from me, getting along great just a little slower and able to drive her car in the small town of Dysart yet. Warm wishes to you all.
CRAIG WHITE AKA WHITEY
June 1, 2025
ALWAYS ENJOYED OUR TUESDAY DISCUSSIONS AT THE CLUB RIP BUDDY
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