Philip B. Leth, Sr., age 72, a lifelong resident of Quincy, died peacefully, Wednesday, February 25, 2026 at South Shore Hospital in Weymouth, surrounded by the loving family he dedicated his life to.

Phil was born in Quincy, to the late Paul W. and Dorothy M. (Delorey) Leth. Raised and educated in the city he always called home, he was a graduate of Quincy Vocational Technical School, Class of 1972.

Phil served proudly in the United States Army during the Vietnam era, a chapter of his life he carried with quiet dignity. He went on to build a steady, hardworking career – first at the former Fore River Shipyard and Quincy Steel and Welding Company, and then for over thirty years as a maintenance mechanic with the United States Postal Service at the South Postal Annex, before retiring several years ago.

But if you knew Phil, you knew that the truest measure of the man was found not at work, but in the moments he showed up for the people he loved — and Phil always showed up. No matter the hour or the circumstance, he was the kind of person who would drop everything to be there. That steadfast presence was perhaps his greatest gift to the world.

He was the beloved husband for forty-eight years of Theresa M. (McArdle) Leth, the devoted father of Philip B. “P.J.” Leth, Jr., Erin F. Leth, and Jill M.L. Sabin and her husband Doug, all of Quincy, and the proudest “Buggy” to his grandchildren, Pierce P. Sabin and Peyton J. Sabin. He was also the loving brother of Karen E. Baker and her husband Richard of Rockland, and his late brothers Carl J. Leth and Paul W. Leth, Jr. He is survived by his uncle, Russell Delorey of Sandwich, Carl’s wife Rosemary of Florida, and his cousin Emily Stephen of Quincy, and many beloved cousins, in-laws, nieces, nephews, and friends.

Phil had a gift for working with his hands — whether it was a woodworking project in his workshop or coaxing flowers and vegetables from the garden, he put the same care and craftsmanship into everything he touched. He treasured the particular rituals that bound him to each person he loved: trips to Disney World with Theresa and Erin, Pearl Jam concerts with P.J., and TV and éclair marathons with Jill. On Wednesday afternoons, you could find him with his grandchildren, where he had rightfully earned the title of “Best Grilled Cheese Maker” — a crown he wore well. He cheered them on at every activity, celebrated every accomplishment, and made sure they always knew he was in their corner.

Phil leaves behind a family that was lucky enough to always know, without question, that he was there for them. That is a legacy that will not fade.

Visiting Hours will be held at the Sweeney Brothers Home for Funerals, 1 Independence Avenue, Quincy, on Tuesday, March 3, from 4 – 7 p.m. A Funeral Mass will be celebrated in Holy Trinity Parish at Most Blessed Sacrament Church, 1015 Sea Street, Quincy, on Wednesday, March 4, at 10:30 a.m. Interment, with military honors, to follow at Pine Hill Cemetery, West Quincy. Relatives and friends are invited to attend.

For those who wish, donations in Phil’s memory may be made to the Dana-Farber Cancer Institute, P.O. Box 849168, Boston, MA 02284-9168 or the Epilepsy Foundation New England, 175 Cabot Street, Suite 301, Lowell, MA 01854.