Margaret Jean “Peggy” Mahon

Margaret Jean “Peggy” Mahon

March 8, 1949 – July 9, 2024

Margaret Jean Mahon, “Peggy,” age 75, of Omaha, Nebraska, passed away on Tuesday, July 9, 2024.

Peggy was born on March 8, 1949, to Henry and Margaret Mahon in Omaha. After Peggy graduated from Marian High School in Omaha in 1967, she attended the University of Nebraska-Lincoln, and later completed her Bachelor’s degree in Criminal Justice from the University of Nebraska-Omaha. Peggy was employed by the Internal Revenue Service for more than 40 years. Peggy enjoyed entertaining family and friends, a good political discussion, reading, doing the crossword and jumble puzzles, attending her children’s and grandchildren’s sporting events, and watching Nebraska football. She loved her Irish heritage, Christmas, birthdays, and spoiling her grandchildren.

Peggy was predeceased by her parents, Henry “Hank” Mahon and Margaret “Peg” E. Mahon.  She is survived by Seana (Jason) Cosgrove, Michael “Mickey” (Lesley) O’Flynn, Brendan (Rachel) O’Flynn, and Bryan (Hilary) O’Flynn. She is also survived by nine wonderful grandchildren: Jack Cosgrove; Colin, Delaney and Declan O’Flynn; Michaela and Danielle O’Flynn; and Brady, Hudson and Boston O’Flynn.

VISITATION:  Sunday, July 14, 2024, from 5:00 PM – 7:00 PM at West Center Chapel, 7805 West Center Road, Omaha with a VIGIL SERVICE: to follow at 7:00 PM.  Interment at Resurrection Cemetery.

Memorials are suggested to St. Jude Children’s Research Hospital or to the Alzheimer’s Association.



  • LaSonia Kimes Posted July 11, 2024 10:55 am

    Peggy was fun to be around. I worked with her at IRS in Omaha before transferring to Nashville. She always had time to give instructions and make me laugh. I will miss all of her stories; remember when her dogs locked her out of her own car??? Look to God for comfort during these difficult times.

  • Sharon Barber Posted July 11, 2024 8:41 pm

    Peggy will be missed. I have always thanked Peggy for helping me be successful at IRS. While, we had great discussions about politics or joining the union, she helped in many ways as a Revenue officer. Peggy, was very good to my sister Mary Ruth, before she passed away, as they worked well together. I know her family and friends will miss her. RIP

  • Sue Worthington Posted July 13, 2024 11:44 am

    My best friend for 60+ years. She was sooo much fun and had zest for life. Truly brilliant and the best Mom and Grandma ever.
    When I count my blessings (Peggy), I count them twice.

    Ciaso forever 😜,
    Susie Byrnes Worthington

  • Gary Herman Posted July 13, 2024 5:58 pm

    One of the best people I knew. Not just because I was so fortunate to work with her for over 30 years, but as a good friend. Her family and friends will surely miss her. God bless you Peggy. Thank you for your all your support for me and I know my Kathy is going to welcome you to heaven.🙏🙏

  • Chris Nebel Posted July 14, 2024 10:35 am

    I had the honor and pleasure to have worked with Peggy for several years. Her smile, sense of humor and her ability to make all around her feel welcome will be missed.

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