Condolences

• May 07, 2026

  Mickey Diherty

  I went to Boston Tech with Sean. I think we first met in 1968. Just recently, a friend and I from Tech decided to try and put together a reunion of sorts during the summer of 2026. One of the first guys we thought we should contact was Sean. I was surprised, and quite saddened to find that he had passed just a few months previous. Although Sean was mostly a high school friend, kind of the way it was when kids lived in different parts of the city, we would run into each other from time to time for years after graduation. No matter how long it had been, it was always a pleasure to see him and catch up. He was always the same kind, smart, funny kid I had met when he was 14. I would like to offer my condolences to Sean's family and friends. Mickey Doherty

• February 22, 2026

  Richard DiMarzio

  I found out about Sean's passing at a recent Alumni ice hockey gathering. I played hockey at Fitchburg State with Sean, he will be greatly missed. Please accept my belated sympathy. May Sean rest in Peace... Rich DiMarzio

• December 24, 2025

  Brenda Duggan

  Rest in peace my dear friend. We had lovely memories in Nantucket and especially the Red Sox World Series game. You were so full of knowledge and compassion and I will truly miss that. Rest easy until we meet again. My condolences to the O'Brien families and friends.

• November 28, 2025

  George Finley

  Sean was one of most endearing person I have ever met and we are all blessed to have been his friend. His caring and kindness knew no bounds. My prayers are with his beloved family. God bless him.

• November 28, 2025

  Richard Zaccaro

  I was sorry to hear about Sean's passing he was a good friend and great guy and will be sadly missed by all. May he rest in peace and the eternal light shine upon his dearly departed soul. Amen 🙏

• November 27, 2025

  Brenda Santos

  Brian and Chris~ We were shocked and saddened to learn of Sean's passing, Sending our deepest condolence's to you both and the O'Brien family. May he rest in eternal peace. ♥️ Brenda & Grorge Santos

• November 26, 2025

  Chris Aylward

  I had the pleasure of meeting and working with Sean at Boston basics 40 years ago. He was a class act, always willing to share his knowledge and thoughts on what to do on certain cases. We lost contact and then I walked into a restaurant in Milton lower mills. He jumped up and came over to say hi and great to see you. We talked about the old times and what we were doing now. I wish I knew he belonged to Wollaston golf course. My house backs up to the course and receive many, many balls in my back yard. I know he would have denied hitting any on my property but I could give him some groan out it. Sean is gone to soon but will not be forgotten. God bless the entire family. 💥🙏🙏🙏🙏💥

• November 26, 2025

  Emmett Maguire

  Our condolences to the O'Brien family. Sean has always been good to me and both my son's. Rory and Emmett. For over twenty years I have been sharing Sean and I stories of playing in the Fallon Cup. How fortunate I was for Sean to invite me to play in. I have played thousands of rounds of golf in my life. And many tournaments. But the Fallon cup was the one tournament to be invited to. Sean made that happen. A true test of golf. Our matches were tough and exciting. Four days of pins and needles. First year, we lost in the finals. Second year we won our flight. Third year, Sean played great and I played terrible but we still made it to Sunday. To this day, it has been my favorite golf memories. We were a great team. Sean was very competitive but had a calmness about him that helped me with my nervousness. When I was down , he would pick me up. Only second to my sons, he was the best partner I ever had the pleasure to play with. These memories I would not have without Sean. However, all that said, more importantly he treated my boys , who caddied for him , with respect and kindness. When others didn't. Sean was a topic at our supper table many times. They would come home and tell Sean stories in their teenage boys way that were hysterical. Sean always made them laugh. As a dad, what's better than that for my boys. He was a great example that I wanted my boys to be around. Sean was not only family, he was my friend. May the wind always be at your back my friend. You will be missed. God bless. Emmett, Rory ,and Emmett Maguire

• November 25, 2025

  Peg Bernard Gilmore

  I'm so sorry for your loss. Sending love and prayers to the O'Brien Family. Peg Bernard Gilmore, fellow Wollaston member, West Roxbury family and youth hockey fan.

• November 25, 2025

  Dina Nichols

  Maryanne, Pat, Emmett and all, I am heartbroken to hear of Sean's passing. While the years may have passed since we have seen one another, I feel like he and I grew up together in so many ways and he will always be part of who I am today. I am forever grateful for that time, for his many funny Sean-ism quips that still pop in my head and make me smile today and for his introducing me to so many of lifes fun adventures...that little VW Beetle, riding to Newport on the back of his motorcycle, his learning the ropes of fine cooking from his buddy Mike, his pride at climbing Mt Katahdin, his being a property owner and Braintree landlord when only in his early 20's, and on and on...he knew how to live a full life even back then, and I am grateful to have been part of it. Most importantly, he loved each of you, his family, so, so deeply. Sending my deepest condolences to you all. Fondly, Dina (Driscoll) Nichols

• November 25, 2025

  Charles Rizzo

  Sean was a kind and thoughtful person. He was always happy and cheerful and I am very saddened by his passing. He was the kind of guy who would do anything for you, Rest in peace Sean!

• November 25, 2025

  John Tarmey

  O'Brien family, We are sorry for the loss of Sean. We are thinking of you all during this challenging time. We feel so lucky to have shared so many wonderful memories with Sean. We will always remember the excitement of the fireworks at Harbor Towers, our spontaneous dance parties, Super Bowl parties, and holiday celebrations. Sean will be deeply missed. With love and deepest sympathy. Jeep, Kelly, Michaela & Brendan Tarmey

• November 25, 2025

  Sissy Kelley

  To Pat and all the OBrien family, Sean and I have been great friends since We met 15 years ago at 88 Wharf....many nights spent together at the restaurant and also on the cape ....it's very sad to lose such a good guy and neighbor.....he will be missed Sissy Kelley and Ken Marchurs