Born. To Ralph Dungan, 43, U.S. Ambassador to Chile since 1964 and onetime J.F.K. presidential adviser, and Mary Rowley Dungan, 40: their seventh child, third daughter; in Santiago, Chile, thereby forcing Dungan to miss the first session of the International Planned Parenthood Federation convening in Santiago.

Divorced. Daniel B. Brewster, 43, Democratic U.S. Senator from Maryland; by Carol Leiper Brewster, 50, Baltimore socialite and notable cam paign asset to her husband; by mutual consent; after twelve years of marriage, two children; in Juarez, Mexico. This week Brewster plans to marry Anne Bullitt Biddle, daughter of the late Ambassador William C. Bullitt, and divorced wife of Nicholas Biddle.

Died. Ngo Dinh Le Thuy, 22, petite, doe-eyed daughter of Mme. Ngo Dinh Nhu, sister-in-law of assassinated President Diem, who just before the 1963 coup accompanied her mother on that famous U.S. speaking tour during which she captured her own share of attention with her fetching ao-dai, later moved to Paris while Mme. Nhu set tled in Italy; of injuries in an auto collision; in Longjumeau, France.

Died. Luis Somoza, 44, President of Nicaragua from 1957 to 1963, elder of Strongman Anastasio ("Tacho") Somoza's two sons, who with his brother "Tachito" continued the more or less benevolent dictatorship established by their father in 1937, espousing a policy of diligent economic progress coupled with blunt anti-Communism in foreign affairs; after a heart attack; in Managua.

Died. Sir Donald Sangster, 55, Prime Minister of Jamaica for seven weeks, who spent 18 years as self-effacing lieutenant of Sir Alexander Bustamante, the leader of Jamaica's push to independence in 1962 and its first Prime Minister, finally came into his own last January when "Busta," aging (83) and infirm, handed over the reins of his Jamaica Labor Party, which Sangster guided to victory in February's elections; of a brain hemorrhage; in Montreal. His successor is Union Leader Hugh Lawson Shearer, 43, appointed by the Governor General after a party caucus.

Died. Thomas S. Lament, 68, retired vice chairman of the board of Morgan Guaranty Trust Co. and one of the last links with the freewheeling Morgan era of U.S. banking; after open-heart surgery; in Manhattan. The son of one of Morgan's closest associates, Lament went to work for J. P. Morgan & Co. in 1922, becoming a director and vice president in 1940, was prominent in the 1959 merger with the Guaranty Trust Co. to form the nation's fourth largest bank (current assets: $7.6 billion), then retired in 1964 to the somewhat less rigorous life of director of half a dozen corporations.* Aside from high finance, his abiding concern was for his alma mater, Harvard ('21), on whose Corporation he served for 15 years, and to which he willed a sizable share of his many millions.

Died. Major General Thomas F. Farrell, 75, U.S. Army engineer and key figure in the development of the first atomic bomb, who in 1944 was recalled from crash building projects in India (the Ledo Road, the pipeline to China) to the even more urgent job of deputy to Manhattan Project Boss General Leslie Groves, sharing vital information that Groves previously held alone, assuring a backup in case of accident, later coordinated operations for the A-bomb drops on Hiroshima and Nagasaki; of cancer; in Reno.

Died. Arthur Gardner, 78, U.S. Ambassador to Cuba from 1953 to 1957, who stirred a storm among U.S. liberals for his support of Cuban Dictator Fulgencio Batista, and found no one ready to listen when he repeatedly warned that Fidel Castro, then regarded by many as a sort of swashbuckling idealist, actually "talked and acted like a Communist"; of a heart attack; in Palm Beach, Fla.

* In 1965, Lament was accused of making illegal "insider" stock profits as a director of Texas Gulf Sulphur Co. Last year he was completely cleared of the charge.

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