John T. O'Sullivan of Duxbury passed away on January 3, 2025 at the age of 78. John was the beloved husband of the late Rita K. (Mooney) O'Sullivan; loving father of Katherine K. O'Sullivan (Steven Lewis) of Scotland and Kevin B. O'Sullivan (Laurie Dunn) of Duxbury; cherished grandfather of Finn O'Sullivan Lewis, Thomas Dunn O'Sullivan and Patrick Dunn O'Sullivan; dear brother of Kathleen O'Sullivan of Hingham, Margaret O'Sullivan of Braintree, Michael O'Sullivan, Esther O'Sullivan, and the late Neil O'Sullivan and Maura Hurley.

John was born in Waterville, County Kerry, Ireland and immigrated to the US in 1954. He graduated from St. John High School in North Cambridge and attended Massachusetts Bay Community College. He worked as a Technical Supervisor at Polaroid and 3M for over 30 years, and part time for the Duxbury Police Department for over 20 years.

John will be remembered for his kindness, generosity, sense of humor, and his gift of the gab with anyone and everyone. John's family was everything to him, especially his three grandsons.

Visiting hours will be held on Thursday, January 9, 2025 from 4:00 to 7:00 p.m. at the MacDonald Funeral Home, 1755 Ocean Street in Marshfield. The Funeral Mass will be celebrated on Friday, January 10 at 10:00 a.m. at the Holy Family Church, 601 Tremont Street in Duxbury, followed by interment in the Duxbury Mayflower Cemetery.

For online guest book, driving directions and other helpful information please visit the website macdonaldfuneralhome.com