SEEKING DIVORCE. Beverly Bentley Mailer, 48, sometime actress; from Norman Mailer, 55, novelist and journalist; after 15 years of marriage, two sons; in Barnstable, Mass. Mrs. Mailer, the writer's fourth wife, blames her husband's "many affairs" for her suit. Mailer currently lives with Model Norris Church, who gave birth to his eighth child last spring.

DIED. George Moscone, 49, mayor of San Francisco; of bullet wounds, after allegedly being shot by a disgruntled former member of the city's board of supervisors who is also accused of shooting and killing Supervisor Harvey Milk, San Francisco's first acknowledged homosexual official; in his city hall office (see NATION).

DIED. Robert C. Hill, 61, former U.S. Ambassador to Spain (1969-72) and four Latin American nations; of a heart attack; in Littleton, N.H. An executive with W.R. Grace & Co., Hill became the youngest ambassador in American history when he was appointed envoy to Costa Rica in 1953 at age 36. He was sent to El Salvador the following year and to Mexico City from 1957 to 1961. Returning to private business, he also served on the Republican National Committee's foreign policy task force, and was sent to Madrid when President Nixon took office. Hill was assigned to Argentina in 1974 and retired last year after surviving unhurt a terrorist attack in Buenos Aires.

DIED. Joseph Marie Trin Nhu Khue, 78, Viet Nam's only Roman Catholic Cardinal and Archbishop of Hanoi; of a heart attack; in Hanoi, three days after his return from his visit to the Vatican for the last papal conclave. Named his nation's first bishop in 1950, Trin Nhu Khue elected to remain in his native Hanoi after North Viet Nam gained its independence in 1954. In favor of a modest rapprochement with the Communists but steadfast in his refusal to vote in their elections, he was imprisoned in 1959 for a year and barred thereafter from traveling outside his country. That ban was dramatically broken in 1976 when he was allowed to go to the Vatican to receive his red hat from Pope Paul VI.

DIED. Otto Kallir, 84, Austrian-born art dealer who introduced and promoted the famed American primitive painter known as Grandma Moses; in New York City. A Viennese art merchant who fled his country after the Nazi invasion, Kallir opened a gallery in New York in 1939 specializing in German and Austrian expressionism. He became best known, however, for presenting the works of Anna Mary Robertson Moses, the Hoosick Falls, N.Y., resident who did not start painting seriously until age 76. "I may be prejudiced," Kallir once said of his client, who died at age 101 in 1961, "but . . . history will declare her work the finest example of folk painting ever produced."

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