Married. Helen Estelle Knowland, 19, brunette daughter of Senate Minority Leader William F. Knowland; and Robert Van Sickle McKeen, 23, a 1955 University of California basketball star, now with the Kaiser Steel Corp.; in Oakland. Calif.

Married. Barbara Yvonne White. 20, orphaned in the bombing of London, adopted daughter of Publisher-Editor William L. (Bill) White of the Emporia Gazette, and child heroine of Editor White's 1941 novel. Journey for Margaret; and Air Force 2nd Lieut. Paul David Walker Jr., 22; in Emporia, Kans.

Married. Rex Harrison (real name: Reginald Carey Harrison), 49, British-born actor of stage (My Fair Lady) and screen (Anna and the King of Slam); and Kay Kendall (real name: Kay Justine Kendall McCarthy), 31, British cinemactress (Genevieve); he for the third time (his second: Actress Lilli Palmer), she for the first; in Manhattan.

Divorced. By Denholm Elliott, 35, British actor of screen (The Heart of the Matter, The Cruel Sea) and stage (Broadway's Ring Round the Moon): Virginia McKenna. 26, blonde British cinemactress (The Cruel Sea, The Barretts of Wimpole Street); after three years of marriage, no children; in an uncontested action, on grounds of adultery with strapping Cinemactor Bill (Wee Geordie) Travers; in London.

Divorced. By John Selwyn Brooke Lloyd, 52, Britain's Foreign Secretary (the first Cabinet Minister to obtain a divorce while in office without having to resign): Elizabeth Marshall Lloyd, 29, his former secretary; after six years of marriage (two of separation), one child; grounds: adultery, in an uncontested action; in London.

Died. Dr. Alan Gregg, 66, retired (1956) vice president of the Rockefeller Foundation, director of its medical-sciences division (1930-51), and world leader in public health; after long illness; in Big Sur, Calif. Dr. Gregg joined the foundation in 1919, promoted generous grants to help finance the proving of sulfanilamide (first of the modern wonder drugs) and of penicillin, backed sex studies (including those of the late Alfred C. Kinsey), and pioneered the concept of mental illness as a disease needing specialized treatment.

Died. James Robert Williams, 69, rustic-humored creator of the cartoon series "Out Our Way"; of cancer and heart disease; in Pasadena, Calif.

Died. Thomas Albert Dwight ("Tad") Jones, 70, famed Yale quarterback (1905-07), head football coach (1920-27) with a record of 49 wins, 14 losses, four ties; of cancer; in Hamden, Conn.

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