Donald Alexander MacIsaac, 86, passed away peacefully at home on July 17, 2026, surrounded by his loving family, with his faithful dog by his side, following complications from Parkinson’s disease.
Don was born in Boston, Massachusetts, on April 21, 1940, to Catherine Pennie and Alexander MacIsaac. He graduated from Jamaica Plain High School and later the Harvard Business School OPM Program.
After high school, Don enlisted in the United States Army where he taught Nike Ajax Missile Systems to both domestic and foreign military personnel. He then began a career in sales and established MacIsaac Office Products in 1975. The company grew into the largest commercial office supply distributor in New England and he sold the company to Staples in 1994.
Don was a longtime member of Wellesley Country Club and and in more recent years could be found at the Wellesley Senior Center playing pool. He was a former trustee of the Agassiz Village Camp, having attended as a child.
Above all else, Don loved his family and particularly enjoyed their summers together on Lake Winnipesaukee. He was predeceased by his parents; his sister, Phyllis; his brother, Richard; and his cherished daughter, Donna.
He is survived by his beloved wife, Barbara and their children Jennifer Lord (Dustin) and Christopher (Amanda); and his first wife, Carol D’Alessandro and their children David (Nicole Bassila O’Brien); Jason (Rose); and his son-in-law, Robert McIntosh. He is also survived by his brother, Joseph; 13 beloved grandchildren, with one more eagerly anticipated; and three great-grandsons.
Family and friends are invited to celebrate Don’s life during calling hours at Wellesley Country Club, 300 Wellesley Avenue, Wellesley, on Tuesday, July 21, from 4:00 to 7:00 p.m. (No denim, please). A memorial service will be held on Wednesday, July 22, at 10:30 a.m. at the Unitarian Universalist Church, 309 Washington Street, Wellesley, followed by a luncheon.
In lieu of flowers, donations in Don’s memory may be made to Boston Community Pediatrics (www.
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