Born. To Yehudi Menuhin, 32, American-born, internationally famed concert violinist, and second wife Diana Gould Menuhin, 34, British actress and ballet dancer: their first child (his third), a son; in Edinburgh, Scotland. Name: Gerrard. Weight: 7 Ibs.

Born. To Alfred Gwynne Vanderbilt, 35, multimillionaire turfman, and second wife Jeanne Lourdes Murray Vanderbilt, 29, brunette socialite who once worked as a pressagent for Manhattan's chichi Stork Club: their first child (his second), a daughter; in Manhattan. Name: Heidi. Weight: 8 Ibs.

Married. Edward John Stanley, 18th Earl of Derby, 30, one of Britain's richest peers, who succeeded to the 463-year-old title on his grandfather's death in February; and Lady Isabel Milles-Lade, 28, Mayfair beauty; in London, at a wedding attended by the royal family.

Married. Whitelaw Reid, 34, vice president and third-generation editor of the family-owned New York Herald Tribune; and Joan Brandon, 18, Barnard College student, daughter of the Tribune's youth page editor; in Purchase, N.Y.

Died. Leo Bulgakov, 59, Russian-born actor-producer and onetime member of the famed Moscow Art Theater; of coronary thrombosis; in Binghamton, N.Y. Bulgakov left Russia for a U.S. tour in 1923, staged highly acclaimed Broadway and Yiddish Theater adaptations of The Cherry Orchard and The Lower Depths, never went back to Moscow.

Died. Elmer Lincoln Irey, 60, founder and longtime boss of the U.S. Treasury's sleuthing T-men, nemesis of such bigtime racketeers as Al Capone and Waxey Gordon; of coronary thrombosis; in Shady Side, Md. Promoted to chief coordinator of all Treasury law-enforcement units in 1937, he retired in 1946, collaborated on the Hollywood production, T-Men.

Died. Eleanor Medill ("Cissie") Patterson, 63, publisher of the Washington Times-Herald; of a heart ailment; in Upper Marlboro, Md. (see PRESS).

Died. General Joseph Edouard Dou-menc, 67, who organized the French army's transport system in World War I, headed the ill-fated French military mission to Moscow just before the Hitler-Stalin pact of 1939, took charge of the demobilization of 5,000,000 troops when France fell; in a mountain-climbing accident; near Briangon, France.

Died. David Wark Griffith, 73, a pioneer film producer (The Birth of a Nation); of a cerebral hemorrhage; in Los Angeles (see CINEMA).