In one episode, against Archie’s wishes, she took a volunteer job as a “Sunshine Lady,” providing company and support for the residents of an old-age home, and when Archie tried to force her to quit because he didn’t want her working out of the house, her explosive adamancy took him, and the show’s viewers, by surprise, a triumph for her character that made the episode among the show’s most affecting.

“A question I am most asked by the press is, ‘Do you think Edith would support the E.R.A.?’ ” Ms. Stapleton said in 1978, in accepting an honorary doctor of humane letters degree from Emerson College in Boston. She concluded, “Of course Edith Bunker would support ratification of the 27th Amendment to the Constitution, because it is a matter of simple justice — and Edith is the soul of justice.”

She was born Jeanne Murray on Jan. 19, 1923, in Manhattan. Her father, Joseph, was an advertising salesman; her mother, Marie Stapleton, was a concert and opera singer, and music was very much a part of her young life.

Jeanne was a singer as well, which might be surprising to those who knew Ms. Stapleton only from “All in the Family,” which opened every week with Edith and Archie singing “Those Were the Days,” Ms. Stapleton lending a screechy half of the duet that was all Edith.

Ms. Stapleton herself had a long history of charming musical performances. She was in the original casts of “Bells are Ringing” on Broadway in the 1950s and “Funny Girl,” with Barbra Streisand, in the 1960s, in which she sang “If a Girl Isn’t Pretty” and “Find Yourself a Man.” Off Broadway in 1991, she played Julia Child, singing the recipe for chocolate cake in the mini-musical “Bon Appétit.” On television, she sang with the Muppets.

After high school, Ms. Stapleton worked as a typist and a secretary, taking acting classes at night. This is also when she changed her name to her mother’s, feeling it was, as she put it once, “more distingué” than Murray. Her older brother, Jack, had done the same. She was not, as often presumed, related to the actress Maureen Stapleton.