A funeral Mass will be said at St. Gregory Church next Tuesday for Theresa “Terry” Dolan, 73, a longtime Dorchester civic leader and environmental activist, who died suddenly April 4 at her home in Lower Mills.

A Milton native who graduated from Fontbonne Academy and Regis College, Ms. Dolan moved into Dorchester in 1991, drawn, she said, by the “mini-renaissance” of the Walter Baker Chocolate buildings on the banks of the Neponset River.

After earning a graduate degree at Simmons College, she worked for 25 years in the Massachusetts State House, serving six governors of both political parties, from Michael Dukakis to Deval Patrick.

Upon her retirement in 2008, Ms. Dolan became a leader in community civic activities, advocating for the cleanup of the Neponset River and volunteering as secretary/treasurer of the Dorchester Lower Mills Civic Association. Most recently, she led the charge for the restoration of historic signage atop the old Baker administration building.

A wake will be held next Monday (April 11) from 4 to 7 p.m., at Dolan’s Funeral Home in Lower Mills, with church services at 10 a.m. on April 12, followed by a private burial. In keeping with her wishes, family and friends are invited to a celebration of her life at 88 Wharf Street “a half hour after the Mass ends.”