LOWELL. Angela Mary (Diamantopoulos) MacMillan, 61, a lifelong Lowell resident, passed away Wednesday, June 24, 2026, at Lowell General Hospital, after a long tough, hard battle with cancer with her loving husband and daughter at her side. She was the beloved wife of Steven MacMillan with whom she shared thirty six years of Marriage.
A daughter of the late Arthur and the late Mary (Kallelis) Diamantopoulos, she was born October 6, 1964, in Lowell, and was raised and educated in the City.
For many years, she was a hairdresser and barber for Newton’s Hair Fashions in Downtown Lowell, retiring upon the birth or her daughter, Sara, in 1991. In later years, she worked for CVS on Bridge Street in Lowell as a night clerk for several years.
Angela loved baking and sewing and loved being outdoors, enjoying walks in the woods as well as hiking. She was a very thoughtful, charitable, giving person, always caring for the wellbeing of others and was a strong woman who fought hard to the very end.
Her survivors include her loving husband, Steven, her cherished daughter, Sara, her brother, David Diamantopoulos and his wife, Loredana, of Alexandria, VA; her niece, Kalista Diamantopoulos of New York; as well as the friends and acquaintances she met and formed bonds with along the way.
She was predeceased by her sister, Athena “Tina” Diamantopoulos and her beloved dog, Caleb.
Relatives and friends are invited to her visitation on Thursday, July 2, 2026 from 10 a.m. to 12 Noon at the MAHONEY FUNERAL HOME, 187 Nesmith Street, 978-452-6361. Her Funeral service will take place at 12 Noon at the Funeral Home. Donations in Angela’s memory can be made to the American Cancer Society, Centralized Memorial Processing, 30 Speen Street, Framingham, MA 01701. Please visit www.MahoneyFuneralHome.com to send the family a message of condolences at anytime.
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