Married. Mama Cass Elliott, 27, brobdingnagian belter of pop-rock tunes; and Donald von Wiedenman, 27, writer-actor and heir to a Bavarian barony; she for the second time, he for the first; in West Hollywood.

Divorced. Vic Damone, 43, Brooklyn-born supper-club crooner; and Judy Rawlins, 35, onetime television actress; after seven years of marriage, three children (he has a fourth child by Screen Star Pier Angeli); in Hollywood. Though he revealed in court that he is nearly broke and is considering bankruptcy. Damone agreed to support payments of $2,100 per month.

Died. Lieut. Colonel Georgy Dobrovolsky, 43, Vladislav Volkov, 35, and Viktor Patsayev, 38, crew of the Soyuz 11 Soviet spacecraft (see SCIENCE).

Died. Franz Stangl, 63, Austrian-born commandant of the Nazi death factories at Sobibor and Treblinka in Poland; of a heart attack; in his prison cell in Dusseldorf, Germany. During 1942 and 1943, when he ran Treblinka, Stangl supervised the slaughter of over 400,000 people. Wearing a spotless white SS jacket and sporting a long riding crop, he often arranged for brass bands to entertain his captives as they were herded into Treblinka's infamous gas "showers." Captured by American troops and turned over to Austrian authorities, Stangl escaped in 1947 and fled to Brazil, where he worked as a mechanic in a Volkswagen plant before he was tracked down in 1967. At that time, Nazi-hunter Simon Wiesenthal branded him "the second Eichmann."

Died. Lord Constantine, 69, onetime West Indian cricket star and the first black man to sit in Britain's House of Lords; of a heart attack; in London. The son of a sugar-plantation foreman, Learie Constantine led the renowned West Indian cricket team to victory over the English in 1928, later left the playing field for a public service career. Knighted and made Trinidad and Tobago's High Commissioner in London in 1962, he was raised to the peerage two years ago.

Died. Dr. R. Walter Johnson, 72, the Negro physician whose hobby was molding promising black youngsters into tennis greats; in Lynchburg, Va. Credited with cracking the color line on public courts and in tournaments, Johnson took a teen-ager from Harlem named Althea Gibson under his wing in 1947 and prepared her for two Wimbledon and two Forest Hills titles. Six years later he befriended a frail ten-year-old named Arthur Ashe Jr. "What made me maddest," Johnson once commented, "was this idea that colored athletes . . . couldn't learn stamina or finesse."

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