Humberto Delgado, Portuguese general and opposition politician (b. 1906) William Heard Kilpatrick, American mathematician and philosopher (b. 1871) February 14 – Désiré-Émile Inghelbrecht, French composer (b. 1880) February 15 – Nat King Cole, American singer and musician (b. 1919) February 19 Forrest Taylor, American actor (b. 1883) Tom Wilson, American actor (b. 1880) February 20 – Michał Waszyński, Polish film director and producer (b. 1904) February 21 – Malcolm X, American civil rights activist (b. 1925) February 22 – Felix Frankfurter, U.S. Supreme Court Justice (b. 1882) February 23 – Stan Laurel, British actor (b. 1890) February 24 – Takeo Itō, Japanese general (b. 1889) February 28 – Adolf Schärf, Austrian politician, 6th President of Austria (b. 1890) March March 5 – Salvador Castaneda Castro, 31st President of El Salvador (b. 1888) March 6 – Margaret Dumont, American actress (b. 1889) March 7 – Louise Mountbatten, Queen of Sweden and second wife of King Gustaf VI Adolf (b. 1889) March 13 Corrado Gini, Italian statistician (b. 1884) Vittorio Jano, Italian automobile designer (b. 1891) Fan Noli, Albanian bishop, poet and politician, 13th Prime Minister of Albania (b. 1882) March 14 – Marion Jones Farquhar, American tennis champion (b. 1879) March 17 Nancy Cunard, English writer, heiress, and political activist (b. 1896) Amos Alonzo Stagg, American baseball, basketball and football player and coach (b. 1862) March 18 – King Farouk of Egypt (b. 1920) March 19 – Gheorghe Gheorghiu-Dej, Romanian communist leader, 47th Prime Minister of Romania (b. 1901) March 22 – Fidel Dávila, Spanish general and minister (b. 1878) March 23 – Mae Murray, American actress (b. 1885) March 25 Giorgio Federico Ghedini, Italian composer (b. 1892) Viola Liuzzo, American Unitarian Universalist and civil rights activist (b. 1925) March 28 Mary, Princess Royal and Countess of Harewood (b. 1897) Jack Hoxie, American actor, rodeo performer (b. 1885) March 30 – Philip Showalter Hench, American physician, recipient of the Nobel Prize in Physiology or Medicine (b. 1896) April April 3 – Ray Enright, American film director (b. 1896) April 10 Linda Darnell, American actress (b. 1923) La Belle Otero, Spanish actress, dancer and courtesan (b. 1868) April 14 Leonard Mudie, English actor (b. 1883) Perry Smith (b. 1928) and Dick Hickock (b. 1931), American convicted murderers April 16 – Sydney Chaplin, English actor (b. 1885) April 18 – Guillermo González Camarena, Mexican inventor (b. 1917) April 21 – Edward Victor Appleton,