Margaret L. Madden, 88, a longtime Washington area resident and the widow of the late J. Warren Madden, who was the first chairman of the National Labor Relations Board and later a judge of the U.S. Court of Claims, died of bronchial pneumonia Monday at her home in Falls Church.

Mrs. Madden first came to the Washington area in 1935, when President Roosevelt appointed her husband chairman of the newly created NLRB. He later was appointed a judge on the U.S. Court of Claims.

A well-known Washington hostess and a trained soprano, Mrs. Madden often sang at musical evenings at her home here, accompanied by her husband on the accordian.

Born in Everett, Wash., the daughter of a Presbyterian minister from Scotland, she moved with her family to McAlester, Okla., when her father was assigned by his church to what was then the Oklahoma Territory.

She served as captain of the girl's basketball team and as valedictorian of her high school class in McAlester, and attended the University of Oklahoma.

In 1913, she married Madden, who began teaching law at the University of Oklahoma the following year.

Mrs. Madden accompanied her husband to teaching posts at West Virginia, Pittsburgh, Chicago, Yale, Cornell and Stanford universities before moving here. She and her husband lived in Washington until 1961, when he retired after 20 years on the Court of Claims.

They then moved to San Francisco, where Judge Madden taught law. After his death in 1972, Mrs. Madden returned to this area to be near her family.

Survivors include two daughters, Mary Persinger of Falls Church and Elizabeth Meyer of Washington; two sons, Robert L., of Philadelphia and Murdaugh S., of Washington; 10 grandchildren and 13 great-grandchildren. A third son Joseph W. Jr., a pilot in World War II. was killed in the war.

The family suggests that expressions of sympathy be in the form of contributions to a chairty of one's choice.