Mary Brennan, 1939–2026, lifelong Waltham resident

Mary Ellen (Scott) Brennan, of Waltham, died Thursday, April 30, 2026 at Lahey Hospital in Burlington. She was 86.

Mary Ellen was born in Waltham on Nov. 10, 1939, a daughter of the late Gilbert and Helen (Statkus) Scott and had been a lifelong resident. She was a graduate of Waltham High School.

Until her retirement she worked for years as a lab technician at Waltham Hospital where she loved her work and the people and patients that she worked with.

For many years she and her husband Don spent many happy summers at their camp in Watson in the Adirondack region of upstate New York and winters at Big Pine Key in Florida.

She leaves her husband, Donald M. Brennan; her son, Donald M. Brennan, Jr. (Estelle) of Natick; her grandson, Donald M. Brennan, III; and many nieces, nephews and their families.

Mary Ellen was also the mother of the late Matthew E. Brennan and sister of late Elizabeth Cusack, Gilbert Scott, Gloria Champion and Patricia Scott.

Family and friends will honor and remember Mary Ellen’s life by gathering for an evening wake in The Joyce Funeral Home, 245 Main Street (Rte. 20), Waltham on Friday, May 8 from 4 p.m. to 7 p.m. and again on Saturday morning in Mount Feake Cemetery, 203 Prospect Street, Waltham where graveside services will be held at 11 a.m.