Married. Andre Previn, 41, principal conductor of the London Symphony Orchestra; and Mia Farrow, 25, pixyish actress (John and Mary), former wife of Frank Sinatra and mother of six-month-old twins fathered by Previn; he for the third time; she for the second; in a Unitarian ceremony in London.

Died. Jochen Rindt, 28, Austrian auto racer, who very probably will become the first man ever to win the Grand Prix world championship posthumously; when his Lotus-Ford crashed at 185 m.p.h. at Monza, Italy, while preparing for a Grand Prix race next day. A professional racer since he was 19, Rindt worked through all the classes from Fiat saloons to Ferrari sports cars, in which he captured (with Masten Gregory) the classic 24 Hours of Le Mans in 1965. Last year he took over as top driver for Lotus and roared off to victory this season in the Monaco, Dutch, French, British and German Grand Prix. That gave him an almost unbeatable 20-point lead over his closest competitor, with only four races to go.

Died. Chester Morris, 69, stage and screen actor, who in 1941 established th,e role of Boston Blackie and in 36 movie sequels over the next nine years played the consummate detective with the square jaw and slicked-back hair for millions of moviegoers; of an overdose of barbiturates in his motel room in New Hope, Pa., where he was starring as Captain Queeg in The Caine Mutiny Court-Martial.

Died. Andre L. Simon, 93, French-born connoisseur of food and wine, founder of the international Wine and Food Society, renowned among gourmets for his Encyclopedia of Gastronomy and among oenologists for Wines of the World; in London.

Died. Rear Admiral Donald B. Mac-Millan, 95, veteran Arctic explorer, anthropologist, ethnologist, geographer and naturalist; in Provincetown, Mass. Mac-Millan's first voyage to the Arctic was with Robert E. Peary on his historic discovery of the North Pole in 1908-09, and the experience so moved MacMillan that he returned 29 times over the next half-century. He crisscrossed the polar region by dog sled, snowmobile and airplane, and sailed into the ice aboard his sturdy schooner Bowdoin. All the while, he made vast contributions to the world's knowledge of Eskimos, glacial movements, polar flora and fauna, and the geography of the Canadian Arctic archipelago. He was 80 before he finally retired, and even then he lost none of his zest for adventure into the unknown. Three years ago, Astronaut Alan Shepard Jr. asked the admiral whether he might be available for a moon trip: "Damn right," replied MacMillan.

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