March 18, 1947 ~ October 15, 2022

Born in: Oceanside, NY
Resided in: Port Jefferson Station, NY

Thomas Leonard Shannon, Sr.

March 18, 1947 – October 15, 2022

On Saturday October 15, 2022, Thomas Shannon, loving husband and father of 3, passed away at the age of 75.

A native of Long Island, New York where he was born the son of a lithographer and a registered nurse. He spent his first years on the Island when at age 9 his father took a business opportunity in San Juan, Puerto Rico where he lived until he left for college. He attended the Colegio San José while in Puerto Rico then continued his education with the Marianists at the University of Dayton studying chemistry and Spanish education.

He later joined the United States Air Force and served during the Vietnam Era.

He returned to Long Island to start his family and join his father in the printing business at Shannon & Sons which saw nearly 40 years in business. He’s always been passionate about his work, took on a love for flying and enjoyed poker night with the boys.

He is preceded in death by his parents, Charles and Margaret, and his brother Charles. He leaves behind his loving wife Theresa, sons Michael (Amy), Brian (Su), and Thomas, Jr., his granddaughter Jaden, his siblings Theresa (Pepe), Maureen (I gotta get in one more Happy Birthday!), Bonnie (Dan), Joe (Linda), numerous cousins, nieces and nephews, and his ever vocal companion Havoc.

He and his family would like to thank Dr. Nataliya Titarenko, her Ukrainian crew and the staff at Mather Hospital for their excellent management of his medical needs. They would also like to thank the faculty and staff at Stony Brook Medicine and Good Shepherd Hospice for their kind and compassionate care for him and his family.

A Memorial Service will be held at Branch Funeral Home in Miller Place on Saturday October 22nd between 3 and 7pm

In lieu of flowers, donations can be made to the Long Island Cares food bank.


Visitation: October 22, 2022 3:00 - 7:00 pm

Branch Funeral Home of Miller Place
551 Route 25A

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The family greatly appreciates donations made to these charities in Thomas L. Shannon 's name.

Long Island Cares

10 Davids Drive
Hauppauge, NY

Memories Timeline

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  1. candleI had the pleasure of working with Tom for two years, Tom was a kind man with a great spirit. Rest in peace Tom you will be missed by me and entire Command Team!

  2. While we may have only know. You for a little while, you always had a great sense of humor and spirit. Even through your battle you were there for us and helped while your son was in the hospital. We are very honored to have known you and thank you for those memories.

  3. Tom and I met when he was 16 and I was 15. We were each other’s Senior Prom partners. When he returned to Puerto Rico for his Colegio San José‘s 50th anniversary, we met again. As we updated our life events during those fifty years, Tom spoke affectionately about his wife Theresa, his sons and granddaughter all of whom he loved so much.
    Tom had been a special human being to anyone who had met him. His affable manners, patience and kindness left memories forever to be cherished.

  4. candleI have worked with Tom for 8 years and though we never met in person we did speak over the phone and via email in between my requests for translations, prints, mailings and more. I loved talking to Tom and was very fond of him. His departure saddened me so much, I can only imagine the pain of his lost to you his family and close friends. To you I wish you comfort and joy in all the memories and love he showed each and everyone of you. Some people are just a wonderful shining star, that we expect to be there always, Tom was like that. I’m glad to have known Tom and sad that many others will never have the opportunity to. I do not think Tom would like the idea of resting in peace but of his soul free of physical restrictions and soaring.

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