(1996 - 2001) (divorced) Marla Prather, the curator and head of the 20th-Century Art Department at the National Gallery of Art in Washington, and Mortimer Benjamin Zuckerman, the chairman and co-publisher of The Daily News in New York, were married on Friday evening in Washington. Associate Justice Stephen G. Breyer of the Supreme Court performed the ceremony at the Decatur House, a museum. The bride, 40, is currently organizing the museum`s retrospective of the sculptor Alexander Calder, scheduled for 1998. She was an editor of ``Paul Gauguin: A Retrospective,`` published by Hugh Lauter Levin Associates in 1987. She graduated from the University of Kansas, where she was elected to Phi Beta Kappa and from which she received a master`s degree in art history. The bride is a daughter of John Prather of Salina, Kan., and the late Jane Prather. Mr. Zuckerman, 59, is also the chairman and editor in chief of U.S. News & World Report, as well as the chairman of The Atlantic Monthly magazine and the chairman and co-founder of Boston Properties, a real-estate company. He graduated from McGill University, from which he also received a law degree. He later earned an M.B.A. degree at the University of Pennsylvania and a master`s of law degree at Harvard University. The bridegroom is the son of the late Esther and Abraham Zuckerman. His father owned a candy and tobacco business in Montreal.