Alec Waugh's first novel was "The Loom of Youth" (1917). Which brother's first novel was "Decline and Fall" (1928)?

Which officer left the army in 1854, possibly because of drinking, then returned to command Union armies in the 1860s? Which 1932 Aldous Huxley novel, like Orwell's later "1984", depicts a dystopian world state? Alec Guinness portrayed which hard-drinking poet in the 1964 Broadway play "Dylan", set in America and Wales? Alec Guinness played Yevgraf, half-brother of the title physician, in which romantic 1965 epic? Alessandro Moreschi, who died in 1922, was the last renowned singer of which type? Alexander Graham Bell's son-in-law Gilbert Grosvenor was president of which scientific society from 1920 to 1954? Alexander Hamilton, Lloyd Bentsen and George Shultz all headed which U.S. Cabinet department? Czar Alexander I entered which foreign capital in triumph in March 1814?