Desmond O'Sullivan's obituary , Passed away on June 18, 2025 in Port Jefferson, New York

Desmond O'Sullivan

March 8, 1935 - June 18, 2025 (90 years old)

Port Jefferson, New York

Desmond O'Sullivan's obituary , Passed away on June 18, 2025 in Port Jefferson, New York

Funeral arrangement under the care of
Bryant Funeral Home Inc

Share

Desmond O'Sullivan

March 8, 1935 - June 18, 2025 (90 years old)

Port Jefferson, New York

Desmond O'Sullivan Obituary

With solemn hearts, we announce the passing of Desmond O'Sullivan of Port Jefferson, New York, born in Astoria, New York, whose presence will be deeply missed, having departed on June 18, 2025 at the age of 90. Family and friends are welcome to send flowers or leave their condolences on this memorial page and share them with the family.

As we bid farewell to this luminous soul, let his loved ones carry forward the torch of his memory, illuminating the path ahead with the warmth of his love and the brilliance of his spirit. Though Desmond may journey beyond the horizon of our sight, his essence remains woven into the very fabric of our being — a guiding light in the darkness, a beacon of hope in the night.

He was loved and cherished by many people including: his parents, John and Beatrice; his wife Kathleen Allen O'Sullivan; his children, John, Desmond Jr. (Carin) and Kathleen (Mason); and his grandchildren, Maggie and TJ.

Visitation will be held on Wednesday, June 25th 2025 from 5:00 PM to 8:00 PM at the Bryant Funeral Home (411 Old Town Rd, Setauket- East Setauket, NY 11733). A funeral service will be held on Thursday, June 26th 2025 at 9:30 AM at the Infant Jesus Chapel - St. Charles Hospital (200 Belle Terre Rd, Port Jefferson, NY 11777).

Funeral arrangement under the care of
Bryant Funeral Home Inc



Wed

June 25

Visitation

5:00 PM - 8:00 PM

Bryant Funeral Home
411 Old Town Rd, Setauket- East Setauket, NY 11733

Thu

June 26

Funeral service

9:30 AM

Infant Jesus Chapel - St. Charles Hospital
200 Belle Terre Rd, Port Jefferson, NY 11777

Sympathy messages

Would you like to offer Desmond O'Sullivan’s loved ones a condolence message? Write your message of sympathy today.

500 CHARACTERS

Add a photo or a video

There is no photo or video of Desmond O'Sullivan.
Be the first to share a memory to pay tribute.

Add a photo

Family member

Solidarity program

Echovita offers a unique service that allows funds generated by the obituary notice to be shared with families that request it.

Make a request

Authorize the original obituary

  • Lets us publish the full obituary text along with the original picture.
  • Helps people recognize Desmond O'Sullivan and express their condolences more easily.
Authorize the original

Add an extra help