Dennis Michael O’Connor

Dennis Michael O'Connor

October 26, 1950 ~ February 13, 2020

Born in: Chicago, IL
Resided in: Irvine, CA

Born in Chicago in October of 1950, and raised in Altadena, California, Dennis Michael O’Connor spent most of his life in Southern California on what many might call a hero’s journey. Upon graduating from the USC School of Medicine, he did a residency in pediatrics, to the joy of the many families he looked after. Loving the children, but not so much the parents, he left his pediatric practice and did a second residency, this time in anesthesia. He found his niche there and made many lifelong friends, two of whom were by his side during his last days.

If James Lipton were to ask Dennis what his favorite word was, he would have replied “resident.” Teaching anesthesia residents was for Dennis a source of joy as well as a fountain of youth. After residents graduated from the program, he looked forward to seeing them at anesthesia meetings and was buoyed by their close connection which spanned decades.

That said, it was in May of 1998 that Dennis truly began to experience the joie de vivre that many only long for. With the birth of Fergus Patrick Daniel O’Connor, he found his true calling: that of being a father. Let it be known that there has never been a father who so desired to know his child. Dennis did not seek to mold Fergus into his preconceived image of what a son should be. No, Dennis sought to nurture and bring out who Fergus was in his deep heart’s core. He also exposed Fergus to his own interests — books and film — while Fergus reciprocated with his love of Legos, Star Wars, and photography.

Like many with Irish roots, Dennis was a passionate and highly principled individual. In addition, he had a way of making others feel like they were the only one in the room. Lives were changed. His memory will live on in a profound way. That is a certainty. Simply put: He lit up the room, and those who were impacted by him will do the same.

Requiescat in pace, Dennis Michael O’Connor.



Funeral Service: February 29, 2020 10:00 am

O'Connor Mortuary
25301 Alicia Parkway
Laguna Hills, CA 92653

(949) 581-4300

Room: Chapel

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Guestbook Entries

  1. Nancy Spencer Nichols February 18, 2020 at 6:29 pm - Reply

    Dearest Elaine and Fergus. May your memories of Dennis fill your hearts with love and healing. Although I am unable to attend the service I will be sending your family light and love. You are part of my favorite memories at Vista Verde. Mrs. Spencer.

  2. Xinia and Dan Chambers February 18, 2020 at 7:14 pm - Reply

    We are with you and Fergus – love you Elaine

  3. Jaclynn O’Connor Metz February 18, 2020 at 7:32 pm - Reply

    Very sorry for your loss. Love your family in Texas.

  4. Wende Schneider February 18, 2020 at 8:33 pm - Reply

    Elaine and Ferguson, I am praying for you and continuing to keep you in my thoughts!!!

  5. Anthony Mario DeNuccio II February 19, 2020 at 6:09 am - Reply

    Through this time, I am confident you will see such glory — unspeakable things — Jesus will reveal himself in a way that is above all human understanding. It will be very intimately personal Elaine. Far beyond buoy but transcendence into heavenly realms.
    He is so near to the broken-hearted and the crushed … Moreover, your life has profoundly touched mine and so many !!!
    Love , grace and peace to you and beloved Fergus.
    Dennis was a treasure and a jewel
    Anthony a simple man in Vermont

  6. Carolyn Farmer February 19, 2020 at 7:00 am - Reply

    Dear Elaine and Fergus, I’m praying for you during this sad and difficult time.

  7. Bonnie Brewster February 19, 2020 at 12:02 pm - Reply

    I’m so sorry for your loss Elaine, you are in my thoughts and prayers. If Dennis was anything like you, he was an amazing person!

  8. Noreen Abb Burns Kimelman February 19, 2020 at 6:46 pm - Reply

    I am so very sorry for your loss. This is a very hard time in life and I truly hope you find comfort in memories and his smile. I will miss him.

  9. Patty Le-Narula February 19, 2020 at 10:50 pm - Reply

    Elaine and Fergus, I can only imagine what you are going through. I’m so sorry. My thoughts and prayers are with you.

  10. Anice katz February 20, 2020 at 12:42 am - Reply

    Elaine and Fergus
    We are so very sorry for your loss. Our hearts and prayers are with you during this difficult time

    Anice and Stephanie

  11. Patricia Beason February 27, 2020 at 7:21 pm - Reply

    I am so sorry Elaine. After reading about Dennis, I can only imagine what an impact he had on so many people. It sounds like he touched a lot of lives in a such a positive way and they in turn went on to touch so many more. I am thinking of you and Fergus at this difficult time.

  12. Emmanuel Laguerre March 4, 2020 at 8:33 pm - Reply

    Amazing man. Only had the privilege to work with him for a few weeks but that was enough for me to know how great of a man he was.

    Rest in Pease Mr. O’Connor

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