DAVID FRANCIS O'SULLIVAN

O'SULLIVAN, David Francis Age 63, of Holyoke, formerly of Concord, MA and Brookline, NH, passed away unexpectedly, but peacefully, on June 19, 2025. He leaves a legacy of love and friendship, cherished by a wide circle of family and friends, including his son, Daniel Francis O'Sullivan of Holyoke; daughter, Mary Elizabeth O'Sullivan (Jim) of Bigfork, MT; and son, Kevin Willian O'Sullivan of New Haven, CT. He is also survived by his brother, Brian O'Sullivan (Alison) of Stow; sister, Meghan O'Sullivan-Spanbauer (Cary) of Carlisle; uncle, Paul O'Sullivan of Concord; nephew, Matthew Rivers (Alicia); niece, Kelley Rivers; a large extended family of O'Sullivans, Mannixes, Finucanes and Rices; his dog, Ladybird; his former wife, Kathleen (Dee, O'Sullivan) Hesseltine; and many cherished friends. Preceded in death by his parents, Francis X. O'Sullivan, Marjorie E. (Mannix) O'Sullivan; and his sister, Lauren Rivers. Visiting Hours on Friday, July 11, from 4:00 to 7:00 p.m., at Dee Funeral Home, 27 Bedford Street, CONCORD, MA. Funeral Mass will be celebrated on Saturday, July 12, at 10:00 a.m., in St. Bernard's Church at Holy Family Parish, 12 Monument Square, Concord, followed by Burial at Sleepy Hollow Cemetery. In lieu of flowers, donations in David's memory would be much appreciated to Alpha Tau Gamma, www.alphataugammaumass.org/Giving/ which he held close to his heart. For David's full obituary and tribute page, please visit www.DeeFuneralHome.com