Mary Ross, 65, a psychiatric nurse at George Washington University Hospital in the 1970s, died Dec. 8 at Washington Hospital Center of complications from a stroke. She had sepsis.

Her husband, Edward D. Ross Jr., confirmed the death.

Mrs. Ross became a homemaker in 1980 and, starting in the late 1990s, an active volunteer. In the early 2000s, she was training director for Amigos de las Americas, a nonprofit organization for high school and college students participating in service projects in Latin America.

After suffering a stroke in 2004, Mrs. Ross had to relearn her movement, speech and reading abilities. She continued to travel independently and in 2011 gave the commencement address for the speech pathology graduation ceremonies at Gallaudet University.

Mary Louise Miller was a native of South Bend, Ind., an a 1969 nursing graduate of what is now St. Catherine University in St. Paul, Minn. She received a master’s degree in psychiatric nursing from Catholic University in 1972.

She was a member of the Catholic Shrine of the Most Blessed Sacrament in Washington.

In 1973, she married Edward D. Ross Jr. They separated in 1999 but remained close.

Besides her husband, of Chevy Chase, survivors include three children, Abigail Ross of Boston, Edward D. Ross III of Brighton, Mass., and Kevin P. Ross of Chevy Chase; four sisters; and two brothers.

— Adam Bernstein