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Official Obituary of

Dennis P. O'Brien

August 8, 1947 ~ September 4, 2020 (age 73) 73 Years Old

Dennis O'Brien Obituary

O’BRIEN, Dennis P., 73, of Sayville, LI, passed on September 4, 2020 with his wife and two sons at his side. Dennis is survived by his loving wife of 49 years Kathleen, his sons Kevin (Heather) and Matthew (Alexa). “Happy Poppy” to Katelyn, Erin and Edie. He is also survived by his sister Marian and a host of loving in-laws, nieces and nephews. A Funeral Mass is scheduled for 10 a.m. Monday at St. Lawrence RC Church in Sayville. Please note masks will be required. www.raynordandrea.com

Friends and family have shared their relationship to show their support.

How do you know Dennis P. O'Brien?

Family Friend Work Other

We are sorry for your loss.

Help others honor Dennis's memory.

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Services

Funeral Mass

Monday
September 7, 2020
10:00 AM
St. Lawrence RC Church
240 West Main St.
Sayville, NY 11782