03/06/2026
JON S. HARTMERE – Of Woburn, passed away peacefully on March 4th at the age of 86.
Jon was the beloved husband of Susan D. (Halliday) Hartmere. He was the devoted father of Jon S. Hartmere, Jr. and his partner Adam of California, Ben Hartmere and his wife Kimberly of North Carolina, and Kathryn Earle and her husband David of Stoneham. He was the loving grandfather of Ryan, Caroline, and Avery, who knew him as “Bumpa” and who brought him tremendous pride and joy. Jon was the dear brother of Jane O’Connell and her husband Bob of Texas, Michael Hartmere of Connecticut, and the late Mary Alberts, whose husband John resides in Wakefield. He also leaves his beloved dog, Bailey, a faithful companion who rarely left his side.
Born in Cambridge, Jon was the son of the late Charles and Alice (Colbert) Hartmere. He was raised in Dedham and graduated from St. Mary of Brookline High School. Jon went on to continue his education, earning both his bachelor’s and master’s degrees from Salem State College before receiving his Juris Doctor from New England School of Law, where he later served on the faculty.
Jon built a distinguished career in law and public service. Over the years he served as an Assistant Attorney General for the Commonwealth of Massachusetts and later as an Assistant District Attorney in Worcester County. Those who worked with Jon respected his sharp mind, strong sense of fairness, and deep commitment to justice. He took great pride in the work he did throughout his long career until his retirement at age 80.
Outside of his professional life, Jon embraced life with curiosity and enthusiasm. He was an avid golfer and enjoyed skiing, sailing, and traveling, always appreciating the opportunity to explore new places and spend time outdoors. He especially enjoyed taking long walks with Bailey and keeping up with current events.
Jon was known by family and friends for his warm, easygoing nature, generosity, and playful sense of humor. Above all, Jon cherished his family. Time spent with his children and grandchildren meant the most to him, and he will be remembered for the love, guidance, and quiet strength he shared with those closest to him.
Jon’s Funeral Mass will be held on TUESDAY, March 10th at 10 a.m. in St. Charles Church, 280 Main Street, Woburn. Relatives and friends are respectfully invited to calling hours in the Lynch-Cantillon Funeral Home, 263 Main Street, Woburn, on MONDAY, March 9th from 4–7 p.m. In lieu of flowers, remembrances may be made in Jon’s memory to St. Jude Children’s Research Hospital or to the MSPCA.