Rahel Davis Brown, 67, long known for her charitable activities here, died Wednesday at Washington Hospital Center.

She was the wife of E. Fontaine Broun, a Washington lawyer.

Born in Madison, Wis., Mrs. Broun was the daughter of the late Joseph E. Davies, former ambassador to Russia, and Emlen Knight Davies.

She came to Washington with her family as a girl and graduated from Holton-Arms School. She later tended the University of Wisconsin.

Mrs. Broun had been a member of the women's board of the old Emergency Hospital. Later, she twice was elected president of the Women's Auxilliary of Washington Hospital Center and held that position at the time of her death. She had devoted much of her time to the hospital's activities and programs.

Mrs. Broun also was a member of the Society of the Colonial Dames, the Sulvage Club and the Chevy Chase Club.

In addition to her husband, of the home in Washington, she is survived by two daughters, Mrs. Burdette Wright Jr. and Mrs. Aristides Moleon, of Washington; two sisters, Mrs. Lowell Ditzen, of Washington, and Mrs. Walter Evers, of Cleveland, and two grandchildren.

The family suggests that expressions of sympathy may be in the form of contributions to the Women's Auxiliary of Washington Hospital Center.